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Full text of "Water resources data"

science for a changing world 



Water Resources Data 

California 

Water Year 1997 

Volume 4. Northern Central Valley Basins and The 
Great Basin from Honey Lake Basin to 
Oregon State Line 




U.S. GEOLOGICAL SURVEY WATER-DATA REPORT CA-97-4 
Prepared in cooperation with the California Department 
of Water Resources and with other agencies 




^^JFOF^^S^ 



CALENDAR FOR WATER YEAR 1997 
1996 



OCTOBER 

5 M T W T F S 

12 3 4 5 

6 7 8 9 10 11 12 
13 14 15 16 17 18 19 
20 21 22 23 24 25 26 
27 28 29 30 31 



NOVEMBER 

S M T W T F S 

1 2 

3 4 5 6 7 8 9 

10 11 12 13 14 15 16 

17 18 19 20 21 22 23 

24 25 26 27 28 29 30 



DECEMBER 

S M T W T F S 

12 3 4 5 6 7 

8 9 10 11 12 13 14 

15 16 17 18 19 20 21 

22 23 24 25 26 27 28 

29 30 31 



1997 



JANUARY 

S M T W T F S 

12 3 4 

5 6 7 8 9 10 11 

12 13 14 15 16 17 18 

19 20 21 22 23 24 25 

26 27 28 29 30 31 

APRIL 

5 M T W T F S 

12 3 4 5 

6 7 8 9 10 11 12 

13 14 15 16 17 18 19 

20 21 22 23 24 25 26 

27 28 29 30 



S M 



JULY 
T W T F S 



12 3 4 5 

6 7 8 9 10 11 12 

13 14 15 16 17 18 19 

20 21 22 23 24 25 26 

27 28 29 30 31 



FEBRUARY 

S M T W T F S 

1 

2 3 4 5 6 7 8 
9 10 11 12 13 14 15 

16 17 18 19 20 21 22 

23 24 25 26 27 28 

MAY 

S M T W T F S 

1 2 3 

4 5 6 7 8 9 10 
11 12 13 14 15 16 17 
18 19 20 21 22 23 24 
25 26 27 28 29 30 31 

AUGUST 

5 M T W T F S 

1 2 

3 4 5 6 7 8 9 
10 11 12 13 14 15 16 

17 18 19 20 21 22 23 

24 25 26 27 28 29 30 
31 



MARCH 

S M T W T F S 

1 

2 3 4 5 6 7 8 

9 10 11 12 13 14 15 

16 17 18 19 20 21 22 

23 24 25 26 27 28 29 

30 31 

JUNE 

S M T W T F S 

12 3 4 5 6 7 

8 9 10 11 12 13 14 

15 16 17 18 19 20 21 

22 23 24 25 26 27 28 

29 30 

SEPTEMBER 

S M T W T F S 

12 3 4 5 6 

7 8 9 10 11 12 13 

14 15 16 17 18 19 20 

21 22 23 24 25 26 27 

28 29 30 







Water Resources Data 
California 

Water Year 1997 

Volume 4. Northern Central Valley Basins and The 
Great Basin from Honey Lake Basin to 
Oregon State Line 

by G.L. Rockwell, M.R Friebel, M.D. Webster, and S.W. Anderson 




U.S. GEOLOGICAL SURVEY WATER-DATA REPORT CA-97-4 
Prepared in cooperation with the California Department 
of Water Resources and with other agencies 



U.S. DEPARTMENT OF THE INTERIOR 
BRUCE BABBITT, Secretary 

U.S. GEOLOGICAL SURVEY 
Thomas J. Casadevall, Acting Director 



For information on the water program in California write to: 

District Chief, Water Resources Division 

U.S. Geological Survey 

Placer Hall, Suite 2012 

6000 J Street 

Sacramento, California 95819-6129 

1998 



PREFACE 

This volume of the annual hydrologic data report of California is one of a series of annual 
reports that document hydrologic data gathered from the U.S. Geological Survey's surface- and 
ground- water data-collection networks in each State, Puerto Rico, and the Trust Territories. These 
records of streamflow, ground- water levels, and water quality provide the hydrologic information 
needed by Federal, State, and local agencies, and the private sector for developing and managing 
our Nation's land and water resources. Hydrologic data for California are contained in four 
volumes: 

Volume 1. Southern Great Basin from Mexican Border to Mono Lake Basin and Pacific 
Slope Basins from the Tijuana River to Santa Maria River 

Volume 2. Pacific Slope Basins from Arroyo Grande to Oregon State Line except Central 
Valley 

Volume 3. Southern Central Valley Basins and The Great Basin from Walker River to 
Truckee River 

Volume 4. Northern Central Valley Basins and The Great Basin from Honey Lake Basin to 
Oregon State Line 

This report is the culmination of a concerted effort by dedicated personnel of the U.S. 
Geological Survey who collected, compiled, analyzed, verified, and organized the data. In 
addition to the authors, who had primary responsibility for assuring that the information contained 
herein is accurate, complete, and adheres to U.S. Geological Survey policy and established 
guidelines, the individuals contributing significantly to the collection, processing, and tabulation 
of the data are given on page V. 

This report was prepared in cooperation with the Cahfomia Department of Water Resources 
and with other agencies, under the general supervision of Michael V. Shulters, District Chief, 
Cahfomia. 



Ill 



REPORT DOCUMENTATION PAGE 



Form Approved 
OMBNo. 0704-0188 



Public reporting burden lor this collection of Information 15 esiinnaled to average 1 hour per response, including \he time for reviewing instructions, searct^ng existing data sources, 
gathering and maintaining the data needed, and completing and reviewing the collection of inlormation Send comments regarding tnis burden estimate or any other aspect of this 
collection ol information, including suggestions for reducing this burden, 10 Washington Headquaners Services, Directorate Tor information Operations and Reports, 1215 Jefferson 
Davis Highway, Suite 1204, Arlington. VA 22202-4302, and 10 the Office of Management and Budget. Paperworli Reduction Protect (0704-0188). Washington. DC 20503. 



1 AGENCY USE ONLY (Leave blank) 



2. REPORT DATE 

July 1998 



3 REPORT TYPE AND DATES COVERED 

Annual— Oct. 1, 1996, to Sept. 30, 1997 



4. TITLE AND SUBTITLE 

Water Resources Data — California, Water Year 1997. Volume 4. Northern 
Central Valley Basins and The Great Basin from Honey Lake Basin to Oregon 
State Line 



6. AUTHOR(S) 

G.L. Rockwell, M.F. Friebel, M.D. Webster, and S.W. Anderson 



5. FUNDfNG NUMBERS 



7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) 

U.S. Geological Survey, Water Resources Division, California District 

Placer Hall, Suite 2012 

6000 J Street 

Sacramento, CA 95819-6129 



8. PERFORMING ORGANIZATION 
REPORT NUMBER 

USGS-WDR-CA-97-4 



9. SPONSORING / MONITORING AGENCY NAME(S) AND ADDRESS(ES) 

U.S. Geological Survey, Water Resources Division, California District 

Placer Hall. Suite 2012 

6000 J Street 

Sacramento, CA 95819-6129 



10. SPONSORING / MONITORING 
AGENCY REPORT NUMBER 

USGS-WDR-CA-97-4 



11. SUPPLEMENTARY NOTES 

Prepare in cooperation with the California Department of Water Resources and with other agencies. 



12a. DISTRIBUTION / AVAILABILITY STATEMENT 



No restriction on distribution. This report may be purchased from the National 
Technical Information Service, Springfield, VA 22161 



12b. DISTRIBUTION CODE 



13. ABSTRACT (Maximum 200 worxis) 

Water-resources data for the 1997 water year for California consist of records of stage, discharge, and water quality 
of streams, stage and contents in lakes and reservoirs, and water levels and water quality in wells. Volume 4 contains 
discharge records for 176 gaging stations and 1 partial-record station, stage and contents for 45 lakes and reservoirs, 
gage-height records for 3 stations, precipitation data for 3 stations, and water quality data for 14 stations and 6 water- 
quality partial-record stations. These data represent that part of the National Water Data System operated by the U.S. 
Geological Survey and cooperating State and Federal agencies in California. 



14. SUBJECT TERMS 

♦California, *Hydrologic data, * Surface water, *Water quality. Flow rate, Sampling 
sites. Gaging stations. Lakes, Reservoirs, Chemical analyses. Sediment, Water 
temperatures. Water analyses 



15. NUMBER OF PAGES 
476 



16. PRICE CODE 



17. SECURITY CLASSIFICATION 
OF REPORT 

Unclassified 



18. SECURITY CLASSIFICATION 
OF THIS PAGE 

Unclassified 



19. SECURITY CLASSIFICATION 
OF ABSTRACT 

Unclassified 



20. LIMITATION OF ABSTRACT 



NSN 7540-01-280-5500 

iv 



Standard Form 298 (Rev. 2-89) 
Prescribed by ANSI Std 239-18 
298-102 



WATER RESOURCES DIVISION 

James R. Mullen, Chief, Operations 
James C. Bowers, Assistant Chief, Operations 

Allan J. Asquith, Hydrologic Technician 

WiUiam L. Boults, Hydrologic Technician 

William R. Brazelton, Hydrologic Technician 

David M. Carlson, Hydrologic Technician 

Lynda R. Christensen, Hydrologic Technician 

Karl Davidek, Hydrologic Technician 

Laureen J. Fong-Frydendal, Hydrologic Technician 

James J. Gibbons, Lead Hydrologic Technician 

Debra A. Grillo, Technical Editor 

Kim L. Hanson, Computer Specialist 

WiUiam J. Hardy, Hydrologic Technician 

Paul D. Honeywell, Hydrologic Technician 

Joel D. Johnson, Supervisory Hydrologist 

Mark V. Johnson, Hydrologic Technician 

WiUie B. Kinsey, Hydrologic Technician 

Daniel S. Kogut, Hydrologic Technician 

Kenneth L. Markham, Volunteer (Retired USGS) 

Jon C. McNulty, Hydrologic Technician 

Denis J. O'Halloran, Hydrologic Technician 

Christine S. O'Neil, Hydrologic Technician 

David Pratt, Hydrologist 

Lee A. Price, Hydrologic Technician 

M. Kathy Shay, Computer Specialist 

Larry R. Shelton, Hydrologic Technician 

Carol J. Simons, Hydrologic Technician 

Jerry R. Smithson, Supervisory Hydrologic Technician 

David M. Sparks, Hydrologic Technician 

Gregory F. Susich, Hydrologic Technician 

M. Kay Witter, Editor 

Mark H. Woloszyk, Hydrologic Technician 

Kevin S. Wright, Hydrologic Technician 

George S. Yamamoto, Scientific Illustrator 

David K. Yancey, Computer Specialist 

Brian T. Yost, Hydrologic Technician 

Ronald P. Fogelman, Supervisory Hydrologist 

Richard A. Hunrichs, Surface Water Hydrologist 

Robert W. Meyer, Surface Water Hydrologist 



CONTENTS 

Page 

Preface iii 

Surface-water and Water-Quality Stations in Downstream Order for Which Records are PubHshed in this Volume ix 

Discontinued Gaging Stations xiii 

Discontinued Lakes and Reservoirs xvii 

Discontinued Water-Quality Stations xviii 

Introduction 1 

Cooperation 1 

Special Networks and Programs 2 

Explanation of the Records 3 

Station Identification Numbers 3 

Downstream-Order System 3 

Latitude-Longitude System 3 

Records of Stage and Water Discharge 4 

Data Collection and Computation 4 

Data Presentation 5 

Identifying Estimated Daily Discharge 7 

Accuracy of the Records 7 

Other Records Available 8 

Records of Surface-Water Quality 8 

Classification of Records 8 

Arrangement of Records 8 

Onsite Measurements and Sample Collection 8 

Water Temperature 9 

Sediment 9 

Cross-Sectional Data 10 

Laboratory Measurements 10 

Water Quality-Control Data 10 

Data Presentation 11 

Access to uses Water Data 11 

Definition of Terms 12 

Publications on Techniques of Water-Resources Investigations 19 

Surface-Water-Discharge and Surface- Water-Quality Records 45 

Remark Codes 45 

Discharge at Partial-Record Stations and Miscellaneous Sites 443 

Analyses of Samples Collected at Water-Quality Partial-Record Stations 444 

Index 451 

ILLUSTRATIONS 

Figure 1 . Diagram showing system for numbering miscellaneous site (latitude and longitude) 3 

2-23. Maps showing location of discharge and water-quality stations: 

2. Alpine County 23 

3. Amador County 24 

4. Butte County 25 

5. Colusa County 26 

6. El Dorado County 27 

7. Glenn County 28 

8. Lake County 29 

9. Lassen County 30 

10. Modoc County 31 

11. Napa County 32 

12. Nevada County 33 

13. Placer County 34 

14. Plumas County 35 

15. Sacramento County 36 

16. Shasta County 37 

vli 



viii CONTENTS 



17-23. Maps showing location of discharge and water-quality stations — Continued: 

17. Sierra County 38 

18. Siskiyou County 39 

19. Solano County 40 

20. Sutter County 41 

21. Tehama County 42 

22. Yolo County 43 

23. Yuba County 44 

24-35. Schematic diagrams showing diversions and storage: 

24. Pit and McCloud River basins 47 

25. Upper Sacramento River basin 89 

26. Battle Creek basin 99 

27. Lower Sacramento River basin 133 

28. South Fork Feather River basin 165 

29. North Fork Feather River basin 181 

30. Feather River at Lake Oroville 209 

31 . Yuba River basin 222 

32. Bear River basin 289 

33. Middle Fork American and Rubicon River basins 320 

34 South Fork American River basin 355 

35. Schematic diagram showing principal inflows and diversions, Sacramento-San Joaquin Delta 442 



SURFACE-WATER AND WATER-QUALITY STATIONS ix 
IN DOWNSTREAM ORDER, FOR WHICH RECORDS ARE PUBLISHED IN THE VOLUME 

[Letters after station name designate type of data: (d), discharge; 

(1), elevation, gage heights, or contents; (g), gage height; (c), chemical; (b), biological; 

(p), precipitation; (t), water temperature; and (s), sediment] 

Station 

No. Page 
PACIFIC SLOPE BASINS IN CALIFORNIA 
SACRAMENTO RIVER BASIN 

Sacramento River at Delta (d) 1 1342000 49 

North Fork Pit River; 

South Fork Pit River near Likely (d) 1 1345500 51 

Pit River near Canby (d) 1 1348500 53 

Collett Reservoir near Little Valley (1) 1 1351600 55 

Pit River below Diversion to Muck Valley Powerplant, near Bieber (d) 1 1351950 56 

Pit No. 1 Powerplant near Fall River Mills (d) 1 1354200 58 

Pit River below Pit No. 1 Powerplant, near Fall River Mills (d) 1 1355010 60 

Lost Creek below diversion to Lost Creek Powerplant No. 1, near Old Station (d) 1 1358020 62 

Hat Creek below Hat No. 1 Diversion Dam, near Bumey (d) 1 1358700 63 

Hat Creek No. 1 Powerplant near Burney (d) 1 1358800 64 

Hat No. 2 Power Canal Diversion to Hat Creek, near Bumey (d) 11359100 65 

Reservoirs in Pit and McCloud River basins: 

Lake Britton near Bumey (1) 1 1361400 66 

Iron Canyon Reservoir near Big Bend (1) 1 1363920 66 

Lake McCloud near McCloud (1) 1 1367740 66 

Pit River below Pit No. 4 Dam (d) 1 1362500 68 

Nelson Creek below diversion to Nelson Creek Powerplant, near Big Bend (d) 1 1362900 70 

East Fork Nelson Creek below diversion to Nelson Creek, near Big Bend (d) 1 1362950 71 

Pit River at Big Bend (d) 11363000 72 

James B. Black Powerplant near Big Bend (d) 1 1363910 74 

Iron Canyon Creek below Iron Canyon Dam, near Big Bend (d) 1 1363930 76 

Pit River near Montgomery Creek (d) 1 1365000 77 

McCloud River near McCloud (d) 1 1367500 79 

McCloud-Iron Canyon Diversion Tunnel near McCloud (d) 1 1367720 81 

McCloud River below McCloud Dam, near McCloud (d) 1 1367760 83 

McCloud River at Ah-Di-Na, near McCloud (d) 1 1367800 84 

McCloud River above Shasta Lake (d) 1 1 368000 86 

Shasta Lake near Redding (1) 1 1370000 88 

Sacramento River at Keswick (d) 1 1 370500 90 

Anderson-Cottonwood Irrigation District Canal at Sharon Street, at Redding (d) 1 1370700 92 

Judge Francis Carr Powerplant near French Gulch (d) 1 1525430 93 

Spring Creek Powerplant at Keswick (d) 1 1371600 94 

Whiskeytown Lake near Igo (1) 1 1371700 96 

Clear Creek near Igo (d) 1 1372000 97 

South Cow Creek Canal Diversion to South Cow Creek, near Whitmore (d) 1 1372080 100 

Kilarc Canal Diversion to Old Cow Creek near Whitmore (d) 1 1372325 101 

Old Cow Creek below diversion to Olsen Powerplant, near Whitmore (d) 1 1372350 102 

Cow Creek near Millville (d) 1 1374000 104 

Cottonwood Creek near Cottonwood (d) 1 1376000 106 

Battle Creek: 

North Fork Battle Creek below North Battle Creek Dam, near Manzanita Lake (d) 1 1376015 108 

North Fork Battle Creek below McCumber Dam, near Manzanita Lake (d) 1 1376025 109 

Powerplants in Battle Creek basin: 

Volta No. 1 Powerplant near Manton (d) 1 1376043 1 10 

Volta No. 2 Powerplant near Manton (d) 1 1376046 1 10 

South Powerplant near Manton (d) 1 1376410 1 10 

Inskip Powerplant near Manton (d) 1 1376430 1 10 

Coleman Powerplant near Cottonwood (d) 1 1376458 1 10 

North Fork Battle Creek below diversion to Keswick Ditch, near Manton (d) 1 1376050 1 1 1 

North Fork Battle Creek below diversion to Cross Country Canal, near Manton (d) 1 1376140 1 12 

North Fork Battle Creek below diversion to Eagle Canyon Canal, near Manton (d) 1 1376150 1 13 

North Fork Battle Creek below diversion to Wildcat Canal, near Manton (d) 1 1376160 1 14 

South Fork Battle Creek below diversion to South Battle Creek Canal, near Manton (d) 1 1376420 115 

South Fork Battle Creek below diversion to Inskip Canal, near Manton (d) 1 1376440 1 16 

South Fork Battle Creek below diversion to Coleman Ditch, near Manton (d) 1 1376460 1 17 

Battle Creek below Coleman Fish Hatchery, near Cottonwood (d) 1 1376550 1 18 

Sacramento River above Bend Bridge, near Red Bluff (dcs) 1 1377100 1 19 

Elder Creek near Paskenta (d) 1 1379500 125 

Mill Creek near Los Molinos (d) 1 1381500 127 

Thomes Creek at Paskenta (g) 11382000 129 

Deer Creek near Vina (d) 1 1383500 131 

Stony Creek: 

Reservoirs in Stony Creek basin: 

East Park Reservoir near Stonyford (1) 11385100 134 

Stony Gorge Reservoir near Elk Creek (1) 1 1386100 134 



X SURFACE-WATER AND WATER-QUALITY STATIONS 

IN DOWNSTREAM ORDER, FOR WHICH RECORDS ARE PUBLISHED IN THE VOLUME— Continued 

Station 

No. Page 
PACIFIC SLOPE BASINS IN CALIFORNIA — Continued 
SACRAMENTO RIVER BASIN— Continued 
Sacramento River — Continued 

Sacramento River at Butte City (g) 1 1389000 135 

Sacramento River at Colusa (dcts) 1 1389500 137 

Butte Creek below diversion dam, near Stirling City (d) 1 1389720 145 

Butte Creek below forks of Butte Diversion Dam, near De Sabia (d) 1 1389740 146 

Butte Creek below Cemerville Diversion Dam, near Paradise (d) 1 1389780 147 

Toadtown Canal above Butte Canal, near Stirling City (d) 1 1389800 148 

Butte Creek near Chico (d) 1 1390000 150 

Sacramento River below Wilkins Slough, near Grimes (dt) 1 1390500 152 

Colusa Basin Drain at Road 99E, near Knights Landing (cls) 1 1390890 156 

Sacramento Slough near Knights Landing (cs) 11391 100 162 

Middle Fork Feather River (head of Feather River): 

Little Grass Valley Reservoir near La Porte (1) 1 1395020 166 

South Fork Feather River below Little Grass Valley Dam (d) 1 1395030 167 

South Fork Tunnel near Strawberry Valley (d) 1 1395150 169 

South Fork Feather River below diversion dam, near Strawberry Valley (d) 1 1395200 170 

Lost Creek: 

Sly Creek Reservoir near Strawberry Valley (1) 1 1 395400 171 

Oroville-Wyandotte Canal near Clipper Mills (d) 1 1 395500 1 72 

Lost Creek near Clipper Mills (d) 1 1396000 173 

South Fork Feather River below Forbestown Dam (d) 1 1396200 175 

Miners Ranch Canal below Ponderosa Dam, near Forbestown (d) 1 1396310 177 

Bangor Canal below Miners Ranch Reservoir, near Oroville (d) 1 1396330 178 

Sucker Run at Kanaka Diversion, near Feather Falls (d) 1 1396395 179 

Lake Almanor at Prattville (I) 1 1399000 182 

North Fork Feather River near Prattville (d) 1 1399500 183 

Butt Creek below Almanor-Butt Creek Tunnel, near Prattville (d) 1 1400500 185 

Butt Valley Reservoir near Caribou (1) 1 1401050 187 

North Fork Feather River below Belden Dam (d) 1 1401 112 188 

South Branch Ward Creek below diversion dam, near Genesee (d) 1 1401 165 190 

Spanish Creek above Blackhawk Creek, at Keddie (d) 1 1402000 191 

North Fork Feather River below Rock Creek Diversion Dam (d) 1 1403200 193 

Bucks Creek: 

Milk Ranch Conduit at outlet, near Bucks Lodge (d) 1 1403450 1 95 

Bucks Lake near Bucks Lodge (1) 1 1403500 197 

Lower Bucks Lake near Bucks Lodge (1) 1 1403520 198 

Bucks Creek below diversion dam, near Bucks Lodge (d) 1 1403530 199 

Grizzly Forebay near Storrie (I) 1 1404250 200 

Grizzly Creek below diversion dam, near Storrie (d) 1 1404300 201 

North Fork Feather River below Grizzly Creek (d) 1 1404330 203 

North Fork Feather River at Pulga (d) 1 1404500 205 

Philbrook Creek below Philbrook Dam, near Butte Meadows (d) 1 1405120 207 

West Branch Feather River below Hendricks Diversion Dam, near Stirling City (d) 1 1405200 208 

Feather River: 

Lake Oroville near Oroville (I) 1 1406800 210 

Palermo Canal near Oroville (d) 1 1406810 211 

Thermalito Afterbay near Oroville (1) 1 1406870 212 

Western Canal at intake, near Oroville (d) 1 1406880 213 

Richvale Canal at intake, near Oroville (d) 1 1406890 2 14 

Pacific Gas & Electric Co. Lateral at intake, near Oroville (d) 1 1406900 215 

Sutter-Butte Canal at intake, near Oroville (d) 1 1406910 216 

Thermalito Afterbay release to Feather River, near Oroville (d) 1 1406920 217 

Feather River at Oroville (d) 1 1407000 218 

Feather River near Gridley (d) 1 1407150 220 

Middle Yuba River (head of Yuba River): 

Jackson Meadows Reservoir near Sierra City (I) 1 1407800 223 

Middle Yuba River, controlled release at Jackson Meadows Dam, near Sierra City (d) 1 1407815 224 

Milton-Bowman Tunnel outlet near Graniteville (d) 1 1408000 225 

Middle Yuba River below Milton Dam, near Sierra City (d) 1 1408550 227 

Lohman Ridge Tunnel at intake, near Camptonville (d) 1 1408870 229 

Middle Yuba River below Our House Dam, near Camptonville (d) 1 1408880 230 

Oregon Creek at Camptonville (d) 1 1409300 231 

Camptonville Tunnel at intake, near Camptonville (d) 1 1409350 232 

Oregon Creek below Log Cabin Dam. near Camptonville (d) 1 1409400 233 

North Yuba River below Goodyears Bar (d) 1 1413000 235 

Slate Creek: 

Slate Creek Tunnel near Strawberry Valley (d) 1 1413250 237 

Slate Creek below diversion dam, near Strawberry Valley (d) 1 1413300 238 



SURFACE-WATER AND WATER-QUALITY STATIONS xi 
IN DOWNSTREAM ORDER, FOR WHICH RECORDS ARE PUBLISHED IN THE VOLUME— Continued 

Station 

No. Page 
PACinC SLOPE BASINS IN CALIFORNIA — Continued 
SACRAMENTO RIVER BASIN— Continued 
Feather River — Continued 

Deadwood Creek near Strawberry Valley (d) I I4I3320 239 

Owl Gulch near Strawberry Valley (d) 1 1413323 240 

New Colgate Powerplant near French Corral (d) 1 1413510 241 

New Bullards Bar Reservoir near North San Juan (1) 1 141 35 15 242 

North Yuba River below New Bullards Bar Dam, near North San Juan (d) 1 1413520 243 

Kidd Lake near Soda Springs (1) 11413940 245 

Lower Cascade Lake near Soda Springs (1) 1 141 3945 246 

Fordyce Lake near Cisco (1) 1 1414090 247 

Fordyce Creek below Fordyce Dam, near Cisco (d) 1 1414100 248 

Lake Spaulding near Emigrant Gap (1) 1 1414140 250 

Drum Canal at tunnel outlet, near Emigrant Gap (d) 1 14141 70 251 

South Yuba Canal near Emigrant Gap (d) 1 1414200 253 

South Yuba River below Spaulding No. 2 Powerplant, near Emigrant Gap (d) 1 1414210 254 

South Yuba River at Langs Crossing, near Emigrant Gap (d) 1 1414250 256 

Fall Creek: 

Lake Creek below Carr Lake, near Graniteville (d) 1 1414360 258 

Canyon Creek: 

French Lake near Cisco (1) 1 1414400 259 

Canyon Creek below French Lake, near Cisco (d) 1 1414410 260 

Faucherie Lake near Cisco (1) 1 1414440 261 

Canyon Creek below Faucherie Lake, near Cisco (d) 1 1414450 262 

Sawmill Lake near Graniteville (1) 1 1414465 263 

Canyon Creek below Sawmill Lake, near Graniteville (d) 1 1414470 264 

Jackson Lake near Sierra City (1) 1 1414690 266 

Jackson Creek below Jackson Lake, near Sierra City (d) 1 1414700 267 

Bowman Lake near Graniteville (1) 1 1415500 268 

Bowman-Spaulding Canal at Jordan Creek Siphon Venturi, near Emigrant Gap (d) 1 1416100 269 

Canyon Creek below Bowman Lake (d) 1 1416500 271 

Texas Creek below Lower Rock Lake, near Graniteville (d) 1 1416610 273 

Texas Creek Tributary below Culbertson Lake, near Graniteville (d) 1 1416620 274 

Lindsey Creek below Lower Lindsey Lake, near Graniteville (d) 1 1416700 275 

South Yuba River at Jones Bar, near Grass Valley (d) 1 1417500 276 

Yuba River below Englebright Dam, near Smartville (d) 1 1418000 278 

Deer Creek near Smartville (d) 1 1418500 280 

Yuba River near Marysville (dcts) 1 1421000 281 

Yuba River at Marysville (cs) 1 1421500 285 

Bear River near Emigrant Gap (d) 1 1421710 290 

Bear River below Drum Afterbay, near Blue Canyon (d) 1 1421770 291 

Bear River below Dutch Flat Afterbay, near Dutch Flat (d) 1 1421790 293 

Rollins Reservoir near Colfax (1) 1 1421800 295 

Bear River Canal intake near Colfax (d) 1 1422000 296 

Bear River below Rollins Dam, near Colfax (d) 1 1422500 298 

Bear River fish release below New Camp Far West Reservoir, near Wheatland (d) 1 1423800 300 

Bear River near Wheatland (d) 1 1424000 301 

Feather River near Nicolaus (cs) 1 1425000 303 

Mormon Ravine near Newcastle (d) 1 1425418 306 

Sacramento River at Verona (dcts) 11425500 307 

Sacramento Weir spill to Yolo Bypass near Sacramento (d) 1 1426000 315 

North Fork American River (head of American River): 

Lake Valley Reservoir near Cisco (1) 1 1426170 316 

Kelly Lake near Cisco (1) 1 1426180 317 

North Fork American River at North Fork Dam (d) 1 1427000 318 

Middle Fork American River: 

French Meadows Reservoir near Foresthill (1) 1 14274(K) 321 

Middle Fork American River at French Meadows (d) 1 1427500 322 

Duncan Creek near French Meadows (d) 1 1427700 324 

Duncan Creek below diversion dam, near French Meadows (d) 1 1427750 326 

Middle Fork American River above Middle Fork Powerplant, near Foresthill (d) 1 1427760 327 

Middle Fork American River below Interbay Dam, near Foresthill (d) 1 1427770 329 

Rubicon River: 

Rubicon-Rockbound Tunnel near Meeks Bay (d) 1 1427940 331 

Rubicon River below Rubicon Dam, near Meeks Bay (d) 1 1427960 332 

Little Rubicon River: 
Buck Island Lake: 

Buck-Loon Tunnel near Meeks Bay (d) 1 1428300 333 

Little Rubicon River below Buck Island Dam, near Meeks Bay (d) 1 1428400 334 

Hell Hole Reservoir near Meeks Bay (1) 1 1428700 335 



Xli SURFACE-WATER AND WATER-QUALITY STATIONS 

IN DOWNSTREAM ORDER, FOR WHICH RECORDS ARE PUBLISHED IN THE VOLUME— Continued 

Station 

No. 
PACinC SLOPE BASINS IN CALIFORNIA— Continued 
SACRAMENTO RIVER BASIN— Continued 
Sacramenio River — Continued 

South Fork Rubicon River: 
Gerle Creek: 

Rubicon River below Hell Hole Dam, near Meeks Bay (d) 1 1428800 336 

Loon Lake near Meeks Bay (1) 1 1429350 338 

Gerle Creek below Loon Lake Dam, near Meeks Bay (d) 1 1429500 339 

Gerle Reservoir near Meeks Bay (1) 1 1429600 341 

South Fork Rubicon River below Gerle Creek, near Georgetown (d) 1 1430000 342 

Pilot Creek above Stumpy Meadows Lake (d) 1 1431800 344 

Pilot Creek below Mutton Canyon, near Georgetown (d) 1 1433040 346 

Long Canyon Creek: 

South Fork Long Canyon Creek Diversion Tunnel near Volcanoville (d) 1 1433060 348 

South Fork Long Canyon Creek below diversion dam, near Volcanoville (d) 1 1433065 349 

North Fork Long Canyon Creek Diversion Tunnel near Volcanoville (d) 1 1433080 350 

North Fork Long Canyon Creek below diversion dam, near Volcanoville (d) 1 1433085 352 

Middle Fork American River near Foreslhill (d) 1 1433300 353 

South Fork American River: 

Pyramid Creek at Twin Bridges (d) 1 1435100 356 

Silver Lake (head of Silver Fork of South Fork American River) near Kirkwood (I) 1 1435900 358 

Silver Lake Outlet near Kirkwood (d) 1 1436000 359 

Caples Lake near Kirkwood (1) 1 1436950 361 

Caples Creek Release below Caples Dam near Kirkwood (d) 1 1436999 362 

South Fork American River near Kyburz (d) 1 1439500 364 

Silver Creek: 

Union Valley Reservoir near Riverton (1) 1 1441001 367 

South Fork Silver Creek: 

Ice House Reservoir near Kyburz (1) 1 1441 100 368 

South Fork Silver Creek near Ice House (d) 1 1441500 369 

Junction Reservoir near Pollock Pines (I) 1 1441760 371 

Silver Creek below Junction Dam, near Pollock Pines (d) 1 1441800 372 

Camino Reservoir near Pollock Pines (1) 1 1441890 373 

Silver Creek below Camino Diversion Dam (d) 1 1441900 374 

Brush Creek Reservoir near Pollock Pines (1) 1 1442690 376 

Brush Creek below Brush Creek Dam, near Pollock Pines (d) 1 1442700 377 

Slab Creek Reservoir near Camino (1) 1 1443450 379 

South Fork American River near Camino (d) 1 1443500 380 

Rock Creek near Placerville (d) 1 1444201 382 

South Fork American River near Placerville (d) 1 1444500 384 

American River: 

Folsom Lake near Folsom (1) 1 1446200 386 

American River at Fair Oaks (d) 1 1446500 387 

American River al Sacramento (cs) 1 1447000 389 

Natomas East Main Drainage Canal: 

Dry Creek at Vernon Street Bridge, at Roseville (d) 1 1447293 392 

Magpie Creek near Del Paso Heights (d) 1 1447330 393 

Arcade Creek near Del Paso Heights (dcts) 1 1447360 395 

Sacramento River at Freeport (dcts) 1 1447650 411 

Yolo Bypass: 
Clear Lake (head of Cache Creek): 

Kelsey Creek near Kelseyville (d) 1 1449500 421 

Clear Lake al Lakeport (g) 1 1450000 423 

Cache Creek near Lower Lake (dp) 11451000 424 

North Fork Cache Creek at Hough Springs, near Clearlake Oaks (dp) 1 1451 100 425 

North Fork Cache Creek near Clearlake Oaks (dp) 1 145 1300 427 

Cache Creek al Rumsey (cs) 1 1451800 428 

Cache Creek al Yolo (d) 1 1452500 432 

Yolo Bypass near Woodland (d) 1 1453000 434 

Yolo Bypass at Interstate Highway 80, near West Sacramenio (cs) 1 1453120 435 

Lake Berryessa near Winters (I) 1 1453900 437 

Pulah Creek near Winters (d) 1 1454000 438 

Putah South Canal near Winters (d) 1 1454210 440 



WATER RESOURCES DATA— CALIFORNIA, WATER YEAR 1997 



xiii 



DISCONTINUED GAGING STATIONS 
The following continuous record streamflow stations in California have been discontinued or converted to partial-record stations. 
Daily records were collected and are stored in NWIS for the period of record shown for each station. 



Station 
No. 



Station name 



Drainage 
area 
(mi^) 



Period 

of 
record 



10354000 Long Valley Creek near Scotts 

10354700 Mill Creek at Milford 

10355000 Baxter Creek near Janesville 

10355500 Schloss Creek at Janesville 

10356500 Susan River at Susanville 

1 0357000 Gold Run Creek near Susanville 

10358470 Willow Creek Tributary near Susanville 

10358500 Willow Creek near Susanville 

10359100 Shaffer Creek near Litchfield 

10359250 Pine Creek near Westwood 

10359300 Pine Creek near Susanville 

10359350 Eagle Lake Tributary near Susanville 

10360230 Eagle Creek at Eagleville 

10360900 Bidwell Creek below Mill Creek, near Fort Bidwell 

10361000 Bidwell Creek at Fort Bidwell 

1 1341400 Sacramento River near Mount Shasta 

1 1341500 Sacramento River at Castella 

1 1 342500 Sacramento River at Antler 

1 1 343000 Parker Creek near Alturas 

1 1 343500 North Fork Pit River near Alturas 

1 1 344000 North Fork Pit River at Alturas 

1 1 344500 South Fork Pit River at Jess Valley 

1 1 346000 Crooks Canyon Creek near Likely 

1 1 346500 Fitzhugh Creek near Alturas 

1 1 347500 Pine Creek near Alturas 

1 1 348000 Pit River at Alturas 

1 1 348200 Pit River near Alturas 

1 1 349000 Pit River near Lookout 

1 1 349500 Ash Creek at Ash Valley 

1 1 350500 Ash Creek at Adin 

1 1 35 1 000 Willow Creek near Adin 

1 1 35 1 500 Widow Valley Creek near Lookout 

1 1352000 Pit River near Bieber 



1 1 352500 Horse Creek at Little Valley, near Pittville 

11352900 Beaver Creek near Hat Creek 

1 1 353500 Bear Creek near Dana 

1 1 353600 Dry Creek near Dana 

1 1353700 Fall River near Dana 

11354500 Fall River at Fall River Mills 

1 1 355000 Pit River at Fall River Mills 

1 1 355500 Hat Creek near Hat Creek 

1 1356500 Hat Creek at Hawkins Ranch, near Hat Creek 

1 1 357000 Hat Creek at Wilcox Ranch, near Cassel 

1 1 358000 Lost Creek near Bald Mountain 

11358500 Rising River near Cassel 

1 1 359500 Hat Creek at Carbon 

1 1 360000 Bumey Creek above Bumey 

1 1360500 Burney Creek at Park Avenue, near Bumey 



1 1 363500 Kosk Creek near Henderson 

1 1 364000 Pit River above Hatchet Creek 

1 1 365500 Squaw Creek above Shasta Lake 

1 1 366000 Squaw Creek at Ydalpom 

1 1 366500 Pit River near Ydalpom 

1 1 367000 Mud Creek near McCloud 



125 


1917, 1919, 




1989-94 


2.26 


1963-69 


19.6 


1913-16,1918-19 


1.05 


1915,1918-19 


184 


1900-05, 1913, 




1917-21,1951-94 


15.1 


1915-16 


3.08 


1966-71 


90.4 


1951-94 


5.63 


1970-73 


24.8 


1951-61 


226 


1961-66, 1968, 




1970-82 


.91 


1963-65 


6.36 


1962-64, 1966-68, 




1970 


25.6 


1961-82 


— 


1912, 1918-19 


135 


1960-87 


256 


1911-17,1920-23 


460 


1911, 1920-41 


80.9 


1931 


203 


1930-32, 1958-67 


212 


1929-31, 1972-85 


100 


1929-31 


33.8 


1929-31 


36.7 


1930-31 


23.5 


1919-31 


857 


1929-31 


1,080 


1966-71 


1,585 


1929-31,1958-71, 




1978-80 


136 


1929-31 


258 


1904-06, 1929-33, 




1958-70, 1972-82 


— 


1930-31 


27.7 


1930-31 


2,475 


1904-08, 1922-26, 




1929-31, 1952-70 




1972-75 


237 


1929-31, 1960-67 


23.2 


1970-73 


84 


1921-26 


6.46 


1967-70 


123 


1959-67 


— 


1912-13,1922 


3,651 


1921-51, 1981 


162 


1926-29, 1930-94 


190 


1912-13 


193 


1922 


7.51 


1930 


22.2 


1912-13, 1921-22 


364 


1922 


60.1 


1922 


94.6 


1912-13, 1921-22, 




1958-64, 1966-75 




1977-80 


54.8 


1911-13,1915-16 


4,819 


1926-37 


64 


1945-66 


99.5 


1912-13 


5,030 


1911-43 


-- 


1927-32 



xiv 



WATER RESOURCES DATA— CALIFORNIA, WATER YEAR 1997 
DISCONTINUED GAGING STATIONS— Continued 



Station 
No. 



Station name 



Drainage 


Period 


area 
(mi^) 


of 


record 


322 


1956-59 


17.1 


1955-59 


401 


1955-59 


633 


1903-08 


673 


1911-43 


6,355 


1926-42 


115 


1950-93 


172 


1912-13 


9.35 


1961-66 


11.9 


1966-72 


77.3 


1957-72 


19 


1957-59 


11.0 


1957-66 


60.8 


1958-65 


3.25 


1964-67 


75.7 


1960-67 


244 


1957-75 


58.8 


1908-13 


88.7 


1957-80 


395 


1971-86 


478 


1982-85 


217 


1963-78 


371 


1977-86 


397 


1982-85 


11.6 


1979-81 


— 


1979-85 


355 


1979 


356 


1941-61 


8.900 


1968-70 


92.8 


1950-66 


9,077 


1957-66 


89.6 


1960-82 


109 


1965-67 


123 


1941-82 


130 


1931-41 


136 


1941-69. 1977-79 


21.2 


1929-32 


13.3 


1977-78 


.65 


1968-70 


203 


1921-97 


28.4 


1978-80 


50.5 


1929-32 


69.4 


1961-70 


134 


1929-31 


210 


1977 


— 


1945-78. 1980 


10.833 


1945-80 


72.4 


1931-86 


21.9 


1968-69 


48.9 


1966-74 


102 


1914-15. 1919-34 


45.6 


1967-82 


98.2 


1909-34 


281 


1934-41 


157 


1936-37. 1940, 




1966-72 


597 


1901-12. 1961-78 


623 


1909. 1981-83 


635 


1920-34 


63.4 


1963-73 


— 


1955-90 


738 


1955-90 


773 


1941-73 


12.080 


1921-97 


44.4 


1960-74 


11.4 


1969-85 



1 1367200 McCloud River below Big Springs, near McCloud 

11367300 Angel Creek near McCloud 

1 1367700 McCloud River above Panther Creek, near McCloud 

1 1 368500 McCloud River near Gregory 

1 1 369000 McCloud River at Baird 

11369500 Sacramento River at Kcnnett 

1 1 37 1 000 Clear Creek at French Gulch 

1 1 37 1 500 Clear Creek near Shasta 

1 1 372050 Chum Creek near Redding 

1 1 372060 Chum Creek below Newton Creek, near Redding 

1 1 372200 South Cow Creek near Millville 

1 1 372700 Clover Creek near Oak Run 

1 1 373200 Oak Run Creek near Oak Run 

1 1 373300 Little Cow Creek near Ingot 

1 1374060 Shingle Creek near Shingletown 

11374100 Bear Creek near Millville 

1 1 374400 Middle Fork Cottonwood Creek near Ono 

1 1 375500 North Fork Cottonwood Creek at Ono 

1 1 375700 North Fork Cottonwood Creek near Igo 

1 1375810 Cottonwood Creek near Olinda 

1 1375815 Cottonwood Creek above South Fork, near Cottonwood 

1 1375820 South Fork Cottonwood Creek near Cottonwood 

1 1 375870 South Fork Cottonwood Creek near Olinda 

1 1375900 South Fork Cottonwood Creek at Evergreen Road, near Cottonwood 

1 1 376038 Manzanita Creek at park boundary, near Manzanita Lake 

1 1376450 Coleman Canal above Coleman Forebay, near Cottonwood 

1 1 376490 Battle Creek above Coleman Powerhouse, near Cottonwood 

1 1 376500 Battle Creek near Cottonwood 

1 1 377200 Sacramento River at Bend Bridge 

11377500 Paynes Creek near Red Bluff 

1 1378500 Sacramento River at Red Bluff 

11378800 Red Bank Creek near Red Bluff 

1 1 378860 Red Bank Creek at Rawson Road Bridge, near Red Bluff 

1 1 379000 Antelope Creek near Red Bluff 

1 1 380000 Elder Creek near Henley ville 

1 1 380500 Elder Creek at Gerber 

1 1381000 Mill Creek near Mineral 

1 1381595 Mill Creek at Sherwood Bridge, near Los Molinos 

11381 990 Thomes Creek tributary at Paskenta 

1 1 382000 Thomes Creek at Paskenta 

1 1 382090 Thomes Creek at Rawson Road Bridge, near Richfield 

1 1 382500 Deer Creek at Deer Creek Meadows 

1 1382550 Deer Creek below Slate Creek, near Deer Creek Meadows 

1 1 383000 Deer Creek at Polk Springs 

1 1 383600 Deer Creek at Red Bridge, near Vina 

1 1 383730 Sacramento River at Vina Bridge, near Coming 

1 1 383800 Sacramento River near Hamilton City 

1 1 384000 Big Chico Creek near Chico 

1 1 384340 Mud Creek at Cohasset Road, near Chico 

1 1 384350 Mud Creek near Chico 

1 1 384500 Stony Creek near Stonyford 

1 1 384600 Little Stony Creek above East Park Reservoir, near Lodoga 

1 1 385000 Little Stony Creek near Lodoga 

1 1385500 Stony Creek above Stony Gorge Reservoir 

1 1386500 Grindstone Creek near Elk Creek 

1 1 387000 Stony Creek near Fruto 

1 1 387200 Stony Creek above Black Butte Lake, near Orland 

1 1 387500 Stony Creek near Orland 

1 1 387800 North Fork Stony Creek near Newville 

1 1387990 South Diverson Canal near Oriand 

1 1 388000 Stony Creek below Black Butte Dam, near Orland 

1 1 388500 Stony Creek near Hamilton City 

1 1 389000 Sacramento River at Butte City 

1 1 389700 Butte Creek at Butte Meadows 

1 1 389950 Little Butte Creek at Magalia 



WATER RESOURCES DATA— CALIFORNIA, WATER YEAR 1997 
DISCONTINUED GAGING STATIONS— Continued 



XV 



Station 

No. 



Station name 



E>rainage 


Period 


area 
(mi^) 


of 


record 


1.31 


1961 


— 


1970-74 


38.9 


1963-78 


60.4 


1965-81 


38.2 


1958-64, 1966-85 


- 


1996 


4,535 


1941-80 


— 


1996 


81.1 


1959-80 


7.54 


1973-81 


44 


1926-32, 1951-53. 




1955-67, 1969-80 


586 


1969-76, 1978-80 


686 


1926-79 


775 


1911-27 


819 


1941-62 


883 


1924-32 


1,062 


1952-86 


9.89 


1963-79 


8.09 


1961-79 


14.1 


1961-70 


105 


1958-61 


108 


1962-87, 1990 


18.7 


1965-87 


— 


1912-65 


132 


1912-66 


1,341 


1912-64 


69.0 


1937-64 


81.3 


1905-21 


85.5 


1970, 1976-81 


68.6 


1966-80 


122 


1959-65 


29.6 


1964-79 


526 


1958-73, 1975-76. 




1979-80 


57.6 


1958-62 


739 


1906-09,1911-18. 




1930-93 


69.1 


1959-63 


6.72 


1966-71 


194 


1912-33 


1,025 


1951-61.1968-82 


— 


1970, 1976 


5.20 


1930-44 


— 


1986-94 


1,965 


1905-11 


— 


1958-86 


— 


1926-52 


15.1 


1928-30. 1932-52 


146 


1931-63 


47.1 


1%1-81 


30.6 


1951-86 


3.974 


1965-84 


37.6 


1989-94 


38.3 


1965-87 


39.8 


1926-34, 1935-64 


96.6 


1958-66 


136 


1967-89 


162 


1941-69 


34.4 


1912-69 


198 


1912-41 


18.2 


1961-66 


94.7 


1924-44 


72.7 


1911-26 


221 


1911-31 


8.98 


1911-33 



1 1 390200 Gold Run Creek Tributary near Nelson 

1 1 3902 1 Cherokee Canal near Nelson 

1 1 390655 South Fork Willow Creek near Fruto 

1 1 390660 Walker Creek at Artois 

1 1 390672 Stone Corral Creek near Sites 

1 1390890 Colusa Basin Drain at Road 99E, near Knights Landing 

1 1391000 Sacramento River at Knights Landing 

1 1391 100 Sacramento Slough near Knights Landing 

1 1391400 Little Last Chance Creek below Frenchman Dam. near Chilcoot 

11391460 Berry Creek near Sattley 

1 1391500 Big Grizzly Creek at Grizzly Valley Dam. near Portola 

1 1392100 Middle Fork Feather River near Portola 

1 1 392500 Middle Fork Feather River near Clio 

1 1393000 Middle Fork Feather River at Sloat 

1 1 393500 Middle Fork Feather River below Sloat 

1 1394000 Middle Fork Feather River near Nelson Point 

1 1394500 Middle Fork Feather River near Merrimac 

1 1 394620 Fall River near Feather Falls 

1 1394800 South Fork Feather River above Little Grass Valley Reservoir 

1 1395300 Lost Creek above Sly Creek Reservoir, near Strawberry Valley 

1 1396300 South Fork Feather River near Forbestown 

1 1396350 South Fork Feather River at Ponderosa Dam 

11396400 Sucker Run near Forbestown 

1 1 396500 Palmero Canal at Enterprise 

1 1 397000 South Fork Feather River at Enterprise 

11397500 Feather River at Bidwell Bar 

1 1400000 Butt Creek above Almanor-Butt Creek Tunnel, near Prattville 

11401000 Butt Creek at Butt Valley 

11401100 Butt Creek near Caribou 

1 1401 125 Indian Creek near Boulder Creek Guard Station, near Taylorsville 

11401150 Red Clover Creek near Genesee 

1 1401 180 Little Grizzly Creek near Genesee 

1 1401200 Indian Creek near Taylorsville 

1 1401 300 Lights Creek near Taylorsville 

1 1401500 Indian Creek near Crescent Mills 

11401900 Spanish Creek near Quincy 

11401940 Mill Creek near Quincy 

1 1402500 Spanish Creek at Keddie 

1 1 403000 East Branch of North Fork Feather River near Rich Bar 

1 1403510 Bucks Creek Tunnel inlet near Storrie 

1 1404000 Grizzly Creek near Storrie 

1 1404100 Bucks Creek Tunnel Outlet near Storrie 

1 1405000 North Fork Feather River at Big Bend 

1 1405300 West Branch Feather River near Paradise 

1 1405500 Spring Valley Diversion near Yankee Hill 

1 1406000 Concow Creek near Yankee Hill 

1 1 406500 West Branch Feather River near Yankee Hill 

1 1 407300 North Honcut Creek near Bangor 

1 1407500 South Honcut Creek near Bangor 

1 1407700 Feather River at Yuba City 

1 1407810 Middle Yuba River at Jackson Meadows Dam, near Sierra City 

1 1407900 Middle Yuba River below Jackson Meadows Dam, near Sierra City 

1 1408500 Middle Yuba River at Milton 

1 1 408700 Middle Yuba River near Alleghany 

1 1408850 Middle Yuba River near Camptonville 

1 1409000 Middle Yuba River above Oregon Creek, near North San Juan 

1 1409500 Oregon Creek near North San Juan 

1 1410000 Middle Yuba River below Oregon Creek, near North San Juan 

1 1410400 Haypress Creek near Sierra City 

11410500 North Yuba River near Sierra City 

11411000 Downie River at Downieville 

1 141 1500 North Yuba River at Goodyears Bar 

11412000 Rock Creek at Goodyears Bar 



WATER RESOURCES DATA— CALIFORNIA, WATER YEAR 1997 
DISCONTINUED GAGING STATIONS— Continued 



Station 

No. 



Station name 



Drainage 


Period 


area 
(mi^) 


of 




record 


12.9 


1911-33 




351 


1968-87 




487 


1941-66 




2.68 


1969-73 




3.96 


1958-63 




.92 


1972-73 




51.8 


1942-94 




— 


1964-91 




16.6 


1926-30 




5.45 


1926-30 




198 


1942-53, 


1957-72 


23.1 


1961-71 




1.200 


1904-41 




20.4 


1949-60 




71.3 


1949-61 




87.1 


1964-80 




1,344 


1944-57 




5.334 


1970-80 




— 


1965-86 




4.01 


1979-85 




140 


1941-67 




265 


1905-27 




99.9 


1947-62 




.59 


1968-73 




5.921 


1942, 1944-83, 




1985 




.65 


1959-64, 


1966-67 


.39 


1959-64, 


1966 


.48 


1958-64, 


1966-67 


.19 


1958-64, 


1966-67 


3.58 


1960-79 




.80 


1959-64 




1.68 


1956-85 




9.10 


1957-85 




308 


1912-41 




31.4 


1910-13, 


1957-86 


16.1 


1910-14 




— 


1963-67 




56.9 


1956-62 




195 


1910-14, 


1944-65 


— 


1951-62 




— 


1947-60 




15.1 


1946-60 




18.0 


1960-92 




315 


1959-84 




88.9 


1965-85 




12.7 


1966-79 




.75 


1973-86 




614 


1912-86 




973 


1972-86 




996 


1931-37, 


1939-55 


3.73 


1961-64, 


1966-70 


73.2 


1924 




13.5 


1922-92 




107 


1925-44 




— 


1976-82 




22.1 


1923-81 




7.32 


1923-39 




.49 


1964-68 




83.0 


1925-60 




177 


1922-61 




449 


1923, 1970-93 


— 


1923-57 




631 


1930-41 




673 


1951-95 




97.6 


1943-59 





11412500 Goodyears Creek at Goodyears Bar 

1 1413100 North Yuba River above Slate Creek, near Strawberry Valley 

1 1413500 North Yuba River below Bullards Bar Dam 

1141 3600 Sweetland Creek near North San Juan 

1141 3900 Upper Castle Creek at Soda Springs 

1141 3950 South Yuba River Tributary near Soda Springs 

11414000 South Yuba Rivernear Cisco 

1 1414190 Drum Canal above Drum Forebay. near Blue Canyon 

1 1414500 Canyon Creek above Jackson Creek 

11415000 Jackson Creek at Mouth 

1 1417000 South Yuba River near Washington 

11417100 Poorman Creek near Washington 

11419000 Yuba River at SmartviUe 

1 1420000 Dry Creek near Brownsville 

1 1420500 Dry Creek at Virginia Ranch 

1 1420700 Dry Creek near Browns Valley 

11421500 Yuba River at Marysville 

11421700 Feather River below Shanghai Bend, nearOlivehurst 

1 1421720 Boardman Canal near Emigrant Gap 

1 1421730 Bear River below Boardman Diversion Dam, near Emigrant Gap 

1 1423000 Bear River near Auburn 

1 1423500 Bear River at Van Trent 

1 1424500 Dry Creek near Wheatland 

1 1424600 Wellman Creek near SmartviUe 

1 1425000 Feather River at Nicolaus 

1 14261 10 Onion Creek Tributary No. 3 near Soda Springs 

1 14261 20 Onion Creek Tributary No. 5 A near Soda Springs 

1 1426130 Onion Creek Tributary No. 2 near Soda Springs 

1 1426140 Onion Creek Tributary No. 1 near Soda Springs 

1 1426 1 50 Onion Creek near Soda Springs 

1 1426160 Onion Creek Tributary No. 7 near Soda Springs 

1 1426200 North Fork Forbes Creek near Dutch Flat 

1 1426400 North Shirttail Creek near Dutch Flat 

1 1426500 North Fork American River near Colfax 

1 1428000 Rubicon River at Rubicon Springs, near Meeks Bay 

1 1429000 South Fork Rubicon River at sawmill, near Quintette 

1 1429800 Robbs Peak Tunnel near Riverton 

1 1430500 South Fork Rubicon River at Mouth, near Georgetown 

11431000 Rubicon River near Georgetown 

1 143 1 500 Georgetown Divide Ditch above Pilot Creek, near Georgetown 

1 1432000 Georgetown Divide Ditch near Georgetown 

1 1432500 Pilot Creek near Georgetown 

1 1433100 Long Canyon Creek near French Meadows 

1 1433200 Rubicon River near Foresthill 

1 1433260 North Fork of Middle Fork American River near Foresthill 

1 1433400 Canyon Creek near Georgetown 

1 1433420 Maine Bar Canyon Creek near Greenwood 

1 1433500 Middle Fork American River near Auburn 

1 1433800 North Fork American River below Auburn Damsite, near Auburn 

1 1434000 North Fork American River at Rattlesnake Bridge 

1 1435000 Pyramid Creek near Phillips 

1 1435500 South Fork American River at Kyburz 

1 1437000 Caples Lake Outlet near Kirkwood 

1 1438000 Silver Fork of South Fork American River near Kyburz 

1 1439950 Alder Creek Pipeline Diversion near Whitehall 

1 1 440000 Alder Creek near Whitehall 

1 1440500 Plum Creek near Riverton 

11440850 Picket Pen Creek near Kyburz 

1 1441000 Silver Creek at Union Valley 

11442000 Silver Creek near Placerville 

1 1442500 South Fork American River below Silver Creek, near Pollock Pines 

1 1443000 American River Flume near Camino 

1 1445000 South Fork American River at Coloma 

1 1445500 South Fork American River near Lotus 

1 1446000 Weber Creek near Salmon Falls 



WATER RESOURCES DATA— CALIFORNIA, WATER YEAR 1997 
DISCONTINUED GAGING STATIONS— Continued 



Station 

No. 



Station name 



Drainage 


Period 


area 

(mi^) 


of 


record 


1,936 


1944-59 


5.02 


1972-75 


.39 


1964-67 


2.03 


1996-97 


23,502 


1904-05, 1921 




1949-79, 1986-96 


6.36 


1955-78 


11.9 


1963-78 


12.6 


1955-62 


14.2 


1966-77 


55.2 


1961-80 


4.37 


1963-69 


13.2 


1961-68 


12.5 


1966-73 


488 


1901-15 


197 


1931-81 


4.49 


1962-63 


100 


1959-80 


955 


1961-62, 1965-73, 




1976-82, 1984-86 


1,041 


1983-86 


1,044 


1943-77 


.83 


1978 


8.35 


1960-72. 1979-80 


113 


1905-06, 1931-76 


37.8 


1969-76 


7.42 


1970-76 


7.06 


1969-76 


78.3 


1961-80 


.87 


1962-65 


15.9 


1960-68 


635 


1906-31 


638 


1949-63 



1 1447000 American River at Sacramento 

1 1447030 Strong Ranch Slough at Sacramento 

1 1447300 Dry Creek Tributary near Roseville 

1 1447330 Magpie Creek near Del Paso Heights 

1 1447500 Sacramento River at Sacramento 

1 1448500 Adobe Creek near Kelseyville 

1 1448900 Highland Creek above Highland Creek Dam 

1 1449000 Highland Creek near Kelseyville 

1 1449010 Highland Creek below Highland Creek Dam, near Kelseyville 

1 1449 1 00 Scotts Creek near Lakeport 

1 1449350 Bums Valley Creek near Clearlake Highlands 

1 1449450 Copsey Creek near Lower Lake 

1 1 449460 Seigler Creek at Lower Lake 

1 1450500 Cache Creek at Lower Lake 

1 145 1500 North Fork Cache Creek near Lower Lake 

1 145 1 700 Bear Creek Tributary near Wilbur Springs 

1 1 45 1 720 Bear Creek near Rumsey 

1 145 1 760 Cache Creek above Rumsey 

1 1 45 1 950 Cache Creek near Brooks 

1 1452000 Cache Creek near Capay 

1 1453 1 70 Dry Creek above Appletree Creek, near Middletown 

1 1453200 Dry Creek near Middletown 

1 1453500 Pulah Creek near Guenoc 

1 1453550 Hunting Creek near Knoxville 

11453570 Adams Creek near Knoxville 

1 1453580 Nevada Creek near Knoxville 

1 1453600 Pope Creek near Pope Valley 

1 1453700 Capell Creek Tributary near Wooden Valley 

11454100 Pleasants Creek near Winters 

1 1454500 Putah Creek at Winters 

1 1455000 Putah Creek near Davis 



DISCONTINUED LAKES AND RESERVOIRS 

The following continuous-record lake stations in California have been discontinued. Daily records were collected and are stored in 
NWIS for the period of record shown for each location. 



Station 
No. 



Station name 



Drainage 
area 
(mi2) 



Period 

of 
record 



1 1362650 Pit no. 5 Powerplant Forebay near Big Bend 

11387995 Black Butte Lake near Orland 

1 1403300 Three Lakes Reservoir near Bucks Lake 

1 1423700 New Camp Far West Reservoir near Wheatland 

1 1425300 Halsey Forebay near Auburn 

1 1425320 Lake Arthur near Auburn 

1 1425330 Halsey Afterbay near Auburn 



738 

1.0 
283 

.86 



1986-89 
1964-90 
1984-87 
1967-76, 
1980-86 
1982-83 
1980-85 



1977-83 



xviii WATER RESOURCES DATA— CALIFORNIA. WATER YEAR 1997 

DISCONTINUED WATER-QUALITY STATIONS 

The following continuous water-quality stations in California have been discontinued. Daily records were collected and are stored 
in NWIS for the period of record shown for each location. 



Station 
No. 



Station name 



Drainage 


Type 


Period 


area 
(mi^) 


of 


of 


record 


record 


184 


WQ,B,S 


1952-93 


135 


T 


1966-71, 1973-87 


425 


WQ,T 


1951-81 


247 


WQ.T.S 


1951-79 


1,431 


WQ,T,S 


1951-79 


4,952 


WQ.T 


1951,1953-81 


604 


T 


1957-59 


6,421 


WQ 


1978-80 


6,648 


B,WQ,C, 






T,S 


1951-94 


115 


S 


1966-67 


228 


WQ,T 


1958-79 


77.3 


T 


1966-71 


425 


WQ,T,S 


1959-71,1973-76, 
1978-79 


244 


T,S 


1965, l%8-73 
1977-79 


88.7 


T 


1977-79 


395 


T,S 


1973-80 


217 


T 


1977-79 


371 


T.S 


1878, 1977-80 


927 


WQ,T,S 


1957-67. 1977-85 


11.6 


C,T 


1980-81 


357 


WQ,T,S 


1962-79 


8,900 


WQ.C,T,S 


1955-83 


— 


T,S 


1959-63, 1967. 
1969-70 


9,020 


T,S 


1961-68 


9,077 


T,S 


1958-66 


92.4 


WQ.T.S 


1959-70 


136 


T.S 


1972-79 


133 


T,S 


1977-79 


203 


WQ.T.S 


1959-83 


284 


T,S 


1978-80 


210 


T,S 


1977 


10,833 


T.S 


1977 


45.6 


T 


1967-79 


597 


T 


1971-78 


623 


T.S 


1981-83 


.96 


T 


1982 


738 


WQ.S.T 


1958-94 


12,080 


WQ.T.S 


1955-67,1969-8 


- 


T.S 


1975 


12,090 


WQ.T.S 


1959-66, 1973-80 


147 


WQ.T 


1953-79 


— 


T.S 


1970-74 


— 


T.S 


1979 


— 


S 


1978-80 


— 


T 


1960-63 


14435 


T,S 


1959-60, 1978-80 


- 


T,S 


1980-81 


— 


WQ.C,T,S 


1996 


44 


T 


1963-67 


686 


T 


1964-82 


1,062 


T 


1963-82 


108 


T 


1963-67 


29.6 


T 


1964-79 


739 


WQ,T,S 


1951-79 


1,953 


WQ.T 


1963-83 


- 


T 


1963-80 


— 


T 


1968 


— 


T 


1969-92 



10356500 Susan River at Susanville 

1 1341400 Sacramento River near Ml. Shasta 

1 1342000 Sacramento River at Delta 

1 1345500 South Fork Pit River near Likely 

11348500 Pit Rivemear Canby 

11365000 Pit River near Montgomery Creek 

1 1 368000 McCloud River above Shasta Lake 

1 1 370000 Shasta Lake near Redding 

1 1 370500 Sacramento River at Keswick 

11371000 Clear Creek at French Gulch 

1 1 372000 Clear Creek near Igo 

1 1372200 South Cow Creek near Millville 

11374000 Cow Creek near Millville 

1 1 374400 Middle Fork Cottonwood Creek near Ono 

1 1 375700 North Fork Cottonwood Creek near Igo 

1 1375810 Cottonwood Creek near Olinda 

1 1375820 South Fork Cottonwood Creek near Cottonwood 

1 1 375870 South Fork Cottownood Creek near Olinda 

1 1 376000 Cottonwood Creek near Cottonwood 

1 1376038 Manzanita Creek at park boundary, near Manzanita Lake 

1 1 376550 Battle Creek below Colman Fish Hatchery, near Cottonwood 

1 1377100 Sacramento River above Bend Bridge, near Red Bluff 

1 1 377200 Sacramento River at Bend Bridge 

1 1378000 Sacramento River near Red Bluff 

1 1 378500 Sacramento River at Red Bluff 

1 1 379500 Elder Creek near Paskenta 

1 1 380500 Elder Creek at Gerber 

1 1381595 Mill Creek at Sherwood Bridge, near Los Molinos 

1 1 382000 Thomes Creek at Paskenta 

1 1382090 Thomes Creek at Rawson Road Bridge, near Richfield 

1 1383600 Deer Creek at Red Bridge, near Vina 

1 1383800 Sacramento River near Hamilton City 

1 1384600 Little Stony Creek above East Park Reservoir, near Lodoga 

1 1 387000 Stony Creek near Fruto 

1 1 387200 Stony Creek above Black Butte Lake, near Orland 

1 1387900 Masterson Hollow Creek near Newville 

1 1 388000 Stony Creek below Black Butte Dam, near Oriand 

1 1 389000 Sacramento River at Butte City 

1 1 389470 Colusa Weir Spill. Butte basin, near Colusa 

1 1 389500 Sacramento River at Colusa 

11390000 Butte Creek near Chico 

1 1390210 Cherokee Canal near Nelson 

1 1390425 Sutter Bypass at Long Bridge, near Meridian 

1 1 390480 Tisdale Weir near Grimes 

1 1 390600 Sacramento River at Boyers Bend, near Dunnig 

1 1391000 Sacramento River at Knights Landing 

1 1391050 Sutter Bypass near Nicolaus 

1 1391 100 Sacramento Slough near Knights Landing 

1 1391500 Big Grizzly Creek at Grizzly Valley Dam, near Portola 

1 1392500 Middle Fork Feather River near Clio 

1 1394500 Middle Fork Feather River near Merrimac 

1 1396350 South Fork Feather River at Ponderosa Dam 

1 1401 180 Little Grizzly Creek near Genesee 

1 1401500 Indian Creek near Crescent Mills 

1 14(M500 North Fork Feather River at Pulga 

1 1405300 West Branch Feather River near Paradise 

1 1406870 Thermolito Aflerbay at river outlet 

1 1406920 Thermolito Afterbay Release to Feather River near Oroville 



WATER RESOURCES DATA-CALIFORNIA, WATER YEAR 1997 
DISCONTINUED WATER-QUALITY STATIONS— Continued 



xlx 



Station 
No. 



Station name 



Drainage 
area 
(miO 



Type 

of 
record 



Period 

of 
record 



11407000 Feather River at Oroville 

1 1407 1 50 Feather River near Gridley 

1 1407700 Feather River at Yuba City 

1 1409000 Middle Yuba River above Oregon Creek, near San Juan 

1 1409400 Oregon Creek below Log Cabin Dam, near Camptonville 

11409500 Oregon Creek near San Juan 

1 1410000 Middle Yuba River below Oregon Creek, near North San Juan 

1 1413100 North Yuba River above Slate Creek, near Strawberry Valley 

1 1413520 North Yuba River below New Bullards Bar Dam, near North San Juan 

1 1413700 Yuba River below Colgate Powerhouse, near French Corral 

1 1417500 South Yuba River at Jones Bar, near Grass Valley 

1 1418000 Yuba River below Englebright Dam, near Smartville 

11418500 Deer Creek near Smartville 

1 1420800 Yuba River at Daquerra Point Dam, near Browns Valley 

11421000 Yuba Rivernear Marysville 

1 1421500 Yuba River at Marysville 

1 1425000 Feather River at Nicolaus 

1 1425 100 Feather River near Nicolaus 

1 1425500 Sacramento River at Verona 

1 1427000 North Fork American River at North Fork Dam 

1 1429350 Loon Lake near Meeks Bay 

1 1433300 Middle Fork American River, near Foresthill 

1 1433400 Canyon Creek near Georgetown 

1 1433800 North Fork American River below Auburn dam site, near Auburn 

1 1439500 South Fork American River near Kyburz 

1 1441001 Union Valley Reservoir near Riverton 

1 1441 100 Ice House Reservoir near Kyburz 

1 1445500 South Fork American River near Lotus 

1 1446500 American River at Fair Oaks 

1 1447030 Strong Ranch Slough at Sacramento 

1 1447500 Sacramento River at Sacramento 

1 1447650 Sacramento River at Freeport 

1 1447810 Sacramento River at Greens Landing 

1 1449010 Highland Creek below Highland Creek Dam, near Kelseyville 

1 145 1 760 Cache Creek above Rumsey 

1 145 1 950 Cache Creek near Brooks 

11452500 Cache Creek at Yolo 

1 1453000 Yolo Bypass near Woodland 

1 1453 1 70 Dry Creek above Appletree Creek, near Middletown 

11453500 Putah Creek near Guenoc 

1 1 453550 Hunting Creek near Knoxville 

1 1454000 Putah Creek near Winters 



3,624 


C,S,T 


1906-07, 1951-92 


3,676 


WQ,T,S 


1965-93 


3,974 


T 


1964-76 


162 


T 


1965-69 


29.1 


T 


1972-79 


34.4 


T 


1965-69 


198 


T 


1974-77 


351 


T 


1968-69, 1974-77 


490 


T 


1971-74 


729 


T 


1975-78 


308 


T,S 


1965-79 


1,108 


T 


1973-78 


84.6 


T,S 


1974-79 


1,330 


T 


1975-77 


1,339 


WQ 


1951-52, 1973-80 


1.344 


WQ.T 


1964, 1966, 
1969-70,1973-76 


5,921 


T,S 


1960-68, 1973-84 


— 


T 


1969-72, 1974 


21,251 


WQ,S 


1952, 1969-70, 
1980 


342 


T,WQ,S 


1959-83 


~ 


WQ 


1996 


524 


WQ,B 


1979 


12.7 


T 


1966-71, 1973-79 


973 


T 


1983-86 


193 


WQ,T,B,S 


1966-79, 1980 


- 


WQ 


1996 


27.2 


WQ 


1996 


673 


B,S,WQ,T 


1957-68. 1970-94 


1,888 


WQ.T 


1960-65 


5.02 


C 


1973-75 


23,502 


S 


1957-79 


— 


B,C 


1974-81. 1985-94 


— 


C 


1974-81 


14.2 


T,S 


1967-77 


955 


T,S 


1960-70, 1976, 
1984-86 


1.041 


T,S 


1984-86 


1.139 


T,S 


1959-65, 1966-67, 
1986 


— 


S 


1957-61.1980 


.83 


C,T 


1978 


113 


T,S 


1960-73 


37.8 


T,S 


1973-74 


574 


WQ,T 


1951-81 



Type of record: WQ (Water-quality); B (Biological); C (Conductivity); T (Temperature); S (Sediment). 



WATER RESOURCES DATA— CALIFORNIA, WATER YEAR 1997 

VOLUME 4— NORTHERN CENTRAL VALLEY BASINS AND THE GREAT BASIN 

FROM HONEY LAKE BASIN TO OREGON STATE LINE 



By G.L. Rockwell, M.F. Friebel, M.D. Webster, and S.W. Anderson 



INTRODUCTION 



The Water Resources Division of the U.S. Geological Survey, in cooperation with State and Federal agencies, obtains a large 
amount of data pertaining to the water resources of California each water year. These data, accumulated during many water years, 
constitute a valuable database for developing an improved understanding of the water resources of the State. To make these data 
readily available to interested parties outside the U.S. Geological Survey, the data are published annually in this report series 
entitled "Water Resources Data — California." 

This volume of the report includes records on surface water in the State. Specifically, it contains: (1) discharge records for 
176 streamflow-gaging stations and 1 partial-record station; (2) stage and content records for 45 lakes and reservoirs; (3) gage- 
height records for 3 stations; (4) precipitation records for 3 stations; and (5) water-quality records for 14 streamflow-gaging stations 
and 6 water-quality partial-record stations. Records included for stream stages are only a small fraction of those obtained during the 
water year. 

The series of annual reports for California began with the 1961 water year with a report that contained only data relating to 
the quantities of surface water. For the 1964 water year, a similar report was introduced that contained only data relating to water 
quality. Beginning with the 1975 water year, the report format changed to include data on quantities of surface water, quality of 
surface and ground water, and ground- water levels. From the 1985 through the 1993 water years, a separate volume for ground- 
water levels and quality was published for California. 

Prior to introduction of this series and for several water years concurrent with it, water-resources data for California were 
published in U.S. Geological Survey Water-Supply Papers. Data on stream discharge and stage and on lake or reservoir contents 
and stage, through September 1960, were published annually under the title "Surface-Water Supply of the United States, Parts 10 
and 11." For the 1961 through 1970 water years, the data were published in two 5-year reports. Data on chemical quality, 
temperature, and suspended sediment for the 1941 through 1970 water years were published annually under the title "Quality of 
Surface Waters of the United States," and water levels for the 1935 through 1974 water years were published under the title 
"Ground-Water Levels in the United States." These Water-Supply Papers may be consulted in public libraries of principal cities of 
the United States, or if not out of print, they may be purchased from U.S. Geological Survey, Information Services, Box 25286, 
Denver Federal Center, Denver, CO 80225-0046. 

Publications similar to this report are published annually by the U.S. Geological Survey for all States. Each report has an 
identification number consisting of the two-letter State abbreviation, the last two digits of the water year, and the volume number. 
For example, this volume is identified as "U.S. Geological Survey Water-Data Report CA-97-4." For archiving and general 
distribution, the reports for 1971-74 water years also are identified as water-data reports. These water-data reports are for sale, in 
paper copy or on microfiche, by the National Technical Information Service, 5285 Port Royal Road, Springfield, VA 22161. For 
further ordering information, the Customer Inquiries telephone number is (703) 487-4650, between 8:30 a.m. and 5:30 p.m. Eastern 
Standard Time. 

Additional information for ordering specific reports may be obtained from the District Office at the address given on the back 
of the title page or by telephone at (9 1 6) 278-3 1 00. 

COOPERATION 

The U.S. Geological Survey and organizations of the State of California have had cooperative agreements for the systematic 
collection of records since 1903. Organizations that supplied data are acknowledged in station descriptions. Organizations that 
assisted in collecting data through cooperative agreement with the Survey are: 

California Department of Water Resources, David N. Kennedy, Director. 

Georgetown Divide Public Utility District, Marie E. Davis, General Manager. 

Sacramento County Department of Public Works, Craig Crouch, Principal Civil Engineer 



2 WATER RESOURCES DATA— CALIFORNIA, WATER YEAR 1997 

Yolo County Rood Control and Water Conservation District, James F. Eagan, General Manager. 

Yuba County Water Agency, Donn Wilson, Engineer-Administrator. 

Assistance in the form of funds or services was given by the Bureau of Reclamation and the National Park Service, 
U.S. Department of Interior. 

The following organizations aided in collecting records: California Department of Water Resources; Energy Growth 
Partnership 1; Five Bears Hydro, Inc.; Highland Hydro Construction; Independent Hydro; Lassen Station Hydroelectric L.P.; 
Malacha Power Project, Inc.; Nelson Creek Power Co.; Pacific Gas and Electric Co.; Sacramento Municipal Utility District; Nevada 
and Oroville-Wyandotte Irrigation Districts; Silhe Energies, Inc.; South Sutter Water District; STS Hydropower; Synergies, Inc.; 
and Placer and Yuba County Water Agencies. 

SPECIAL NETWORKS AND PROGRAMS 

Hvdrologic Benchmark Network is a network of 50 sites in small drainage basins around the country whose purpose is to 
provide consistent data on the hydrology, including water quality, and related factors in representative undeveloped watersheds 
nationwide, and to provide analyses on a continuing basis to compare and contrast conditions observed in basins more obviously 
affected by human activities. 

National Stream-Quality Accounting Network (N ASQAN) monitors the water quality of large rivers within four of the 
Nation's largest river basins — the Mississippi, the Columbia, the Colorado, and the Rio Grande. The network consists of 39 stations. 
Samples are collected with sufficient frequency that the flu,\ of a wide range of constituents can be estimated. The objective of 
NASQAN is to characterize the water quality of these large rivers by measuring concentration and mass transport of a wide range 
of dissolved and suspended constituents, including nutrients, major ions, dissolved and scdinieni-bound heavy metals, common 
pesticides, and inorganic and organic forms of carbon. This information will be used (I) to describe the long-term trends and 
changes in concentration and transport of these constituents; (2) to test findings of the National Water-Quality Assessment Program 
(NAWQA); (3) to characterize processes unique to large-river systems such as storage and re-mobilization of sediments and 
associated contaminants; and (4) to refine existing estimates of off-continent transport of water, sediment, and chemicals for 
assessing human effects on the world's oceans and for determining global cycles of carbon, nutrients, and other chemicals. 

The National Atmospheric Deposition Program/National Trends Network (NADP/NTN) provides continuous measurement 
and assessment of the chemical climate of precipitation throughout the United States. As the lead federal agency, the USGS works 
together with over 100 organizations to accomplish the following objectives: (1) Provide a long-term, spatial and temporal record 
of atmospheric deposition generated from a network of 191 precipitation chemistry monitoring sites. (2) Provide the mechanism to 
evaluate the effectiveness of the significant reduction in SQ2 emissions that began in 1995 as implementation of the Clean Air Act 
Amendments (CAAA) occurred. (3) Provide the scientific basis and nationwide evaluation mechanism for implementation of the 
Phase II CAAA emission reductions for S02 and NOx scheduled to begin in 2000. 

Data from the network, as well as information about individual sites, are available through the world wide web at: 

http://nadp.nrel.colostate.edu/NADP 

The National Water-Oualitv Assessment (NAWQA) Program of the U.S. Geological Survey is a long-term program with 
goals to describe the status and trends of water-quality conditions for a large, representative part of the Nation's ground- and 
surface-water resources; provide an improved understanding of the primary natural and human factors affecting these observed 
conditions and trends; and provide information that supports development and evaluation of management, regulatory, and 
monitoring decisions by other agencies. 

Assessment activities are being conducted in 53 study units (major watersheds and aquifer systems) that represent a wide 
range of environmental settings nationwide and that account for a large percentage of the Nation' s water use. A wide array of 
chemical constituents will be measured in ground water, surface water, streambed sediments, and fish tissues. The coordinated 
application of comparative hydrologic studies at a wide range of spatial and temporal scales will provide information for decision 
making by water-resources managers and a foundation for aggregation and comparison of findings to address water-quality issues 
of regional and national interest. 

Communication and coordination between USGS personnel and other local. State, and federal interests are critical 
components of the NAWQA Program. Each study unit has a local liaison committee consisting of representatives from key federal. 
State, and local water resources agencies, Indian nations, and universities in the study unit. Liaison committees typically meet 
semiannually to discuss their information needs, monitoring plans and progress, desired information products, and opportunities to 
collaborate efforts among the agencies. 

Additional information about the NAWQA Program is available through the world wide web at: 
http://wwwrvares.er.usgs.gov/nawqa/nawqa_home.html 



WATER RESOURCES DATA— CALIFORNIA, WATER YEAR 1 997 3 

EXPLANATION OF THE RECORDS 

The surface-water records published in this report are for the 1997 water year that began October 1, 1996, and ended 
September 30, 1 997. A calendar of the water year is provided on the inside of the front cover. The records contain streamflow data, 
stage and contents data for lakes and reservoirs, and water-quality data for surface water. The following sections of the introductory 
text are presented to provide users with a more detailed explanation of how the hydrologic data published in this report were 
collected, analyzed, computed, and arranged for presentation. 

Station-Identification Numbers 

Each streamsite data station in this report is assigned a unique identification number. This number is unique in that it applies 
specifically to a given station and to no other. The number usually is assigned when a station is first established and is retained for 
that station indefinitely. The systems used by the U.S. Geological Survey to assign identification numbers for surface-water stations 
and for ground-water well sites differ, but both are based on geographic location. The "downstream-order" system is used for regular 
surface-water stations and the "latitude-longitude" system is used for surface-water stations in California where only miscellaneous 
measurements are made. 

Downstream-Order System 

Since October 1 , 1950, the order of listing hydrologic-station records in Survey reports has been in a downstream direction 
along the main stream. All stations on a tributary entering upstream from a mainstream station are listed before that station. A station 
on a tributary that enters between two mainstream stations is listed between them. A similar order is followed in listing stations on 
first rank, second rank, and other ranks of tributaries. The rank of any tributary with respect to the stream to which it is immediately 
tributary is indicated by an indentation in the "List of Stations" in the front of this report. Each indentation represents one rank. This 
downstream order and system of indentation show which stations are on tributaries between any two stations and the rank of the 
tributary on which each station is situated. 

The station-identification number is assigned according to downstream order. In assigning station numbers, no distinction is 
made between partial-record stations and other stations; therefore, the station number for a partial-record station indicates 
downstream-order position in a list made up of both types of stations. Gaps are left in the series of numbers to allow for new stations 
that may be established; hence, the numbers are not consecutive. The complete eight-digit number for each station such as 
1 1 3963 10, which appears just to the left of the station name, includes the two-digit part number "11" plus the six-digit downstream- 
order number "396310." The part number designates the major river basin; for example, part "11" is the Pacific Slope Basins in 
California. 

Latitude-Longitude System 

The identification numbers for miscellaneous surface-water sites are assigned according to the grid system of latitude and 
longitude. The number consists of 1 5 digits. The first six digits denote the degrees, minutes, and seconds of latitude, the next seven 
digits denote degrees, minutes, and seconds of longitude, and the last two digits (assigned sequentially) identify the other sites 
within a 1 -second grid. This site-identification number, once assigned, is a pure number and has no locational significance. In the 
rare instance where the initial determination of latitude and longitude are found to be in error, the station will retain its initial 
identification number; however, its true latitude and longitude will be listed in the LOCATION paragraph of the station description 
(fig. 1). 



iir^ss'SQ' 



33°53'15' 



Coordinates for well D 
(335314117383801) 

33°53'13" 




Coordinates for 
miscellaneous site C 
(335314117383701) 

Coordinates for wells 
A (335313117383701) and 
6(335313117383702) 



Figure 1. System for numbering miscellaneous sites (latitude and longitude). 



4 WATER RESOURCES DATA— CALIFORNIA, WATER YEAR 1997 

Records of Stage and Water Discharge 

Records of stage and water discharge may be complete or partial. Complete records of discharge are those obtained using a 
continuous stage-recording device through which either instantaneous or mean daily discharges may be computed for any time, or 
any period of time, during the period of record. Complete records of lake and reservoir contents, similarly, are those for which stage 
or contents may be computed or estimated with reasonable accuracy for any time, or period of time. They may be obtained using a 
continuous stage-recording device, but need not be. Because daily mean discharges and end-of-day contents commonly are 
published for such stations, they are referred to as "daily stations." 

By contrast, partial records are obtained through discrete measurements without using a continuous stage-recording device 
and pertain only to a few flow characteristics, or perhaps only one. The nature of the partial record is indicated by table titles such 
as "Crest-stage partial records," or "Low-flow panial records." Records of miscellaneous discharge measurements or of 
measurements from special studies, such as low-flow seepage studies, may be considered as partial records, but they are presented 
separately in this report. Location of all complete-record stations for which data are given in this report are shown, by county, in 
figures 2 through 23. 

Data Collection and Computation 

The data obtained at a complete-record gaging station on a stream or canal consist of a continuous record of stage, individual 
measurements of discharge throughout a range of stages, and notations regarding factors that may affect the relation between stage 
and discharge. These data, together with supplemental information, such as weather records, are used to compute daily discharges. 
The data obtained at a complete-record gaging station on a lake or reservoir consist of a record of stage and of notations regarding 
factors that may affect the relation between stage and lake contents. These data are used with stage-area and stage-capacity curves 
or tables to compute water-surface areas and lake storage. 

Continuous records of stage are obtained with digital recorders, data collection platforms, or data loggers that sample stage 
values at selected time intervals. Measurements of discharge are made with current meters using methods adapted by the U.S. 
Geological Survey as a result of experience accumulated since 1880. These methods are described in standard textbooks, in U.S. 
Geological Survey Water-Supply Paper 2175, and in U.S. Geological Survey Techniques of Water-Resources Investigations 
(TWRl), Book 3, Chapters Al through A19, and Book 8, Chapters A2 and B2. The methods are consistent with the American 
Society for Testing and Materials (ASTM) standards and generally follow the standards of the International Organization for 
Standards (ISO). 

In computing discharge records, results of individual measurements are plotted against the corresponding stages, and stage- 
discharge relation curves are then constructed. From these curves, rating tables indicating the approximate discharge are prepared 
for any stage within the range of the measurements. If it is necessary to define extremes of discharge outside the range of current- 
meter measurements, the curves are extended using (1) logarithmic plotting; (2) velocity-area studies; (3) results of indirect 
measurements of peak discharge, such as slope-area or contracted-opening measurements, and computations of flow-over-dam or 
weirs; or (4) step-backwater techniques. 

Daily mean discharges are computed by applying the daily mean stages (gage heights) to the stage-discharge curves or tables. 
If the stage-discharge relation is subject to change because of frequent or continual change in the physical features that form the 
control, the daily mean discharge is determined by the shifting-control method, in which correction factors based on individual 
discharge measurements and notes of the personnel making the measurements are applied to the gage heights before the discharges 
are determined from the curves or tables. This shifting-control method also is used if the stage-discharge relation is changed 
temporarily because of aquatic growth or debris on the control. For some stations, formation of ice in the winter may so obscure the 
stage-discharge relations that daily mean discharges must be estimated from other information such as temperature and precipitation 
records, notes or observations, and records for other stations in the same or nearby basins for comparable periods. 

At some stream-gaging stations, the stage-discharge relation is affected by backwater from reservoirs, tributary streams, or 
other sources. This necessitates the use of the slope method in which the slope or fall in a reach of the stream is a factor in computing 
discharge. The slope or fall is obtained by means of an auxiliary gage set at some distance from the base gage. At some stations the 
stage-discharge relation is affected by changing stage; at these stations the rate of change in stage is used as a factor in computing 
discharge. 

At some gaging stations, acoustic velocity meter (AVM) systems are used to compute discharge. The AVM system measures 
the stream's velocity at one or more paths in the cross section. Coefficients are developed to relate this path velocity to the mean 
velocity in the cross section. Because the AVM sensors are fixed in position, the adjustment coefficients generally vary with stage. 
Cross-sectional area curves are developed to relate stage, recorded as noted above, to cross-section area. Discharge is computed by 
multiplying path velocity by the appropriate stage-related coefficient and area. 

In computing records of lake or reservoir contents, it is necessary to have available surveys, curves, or tables defining the 
relation of stage and contents. The application of stage to the stage-content curves or tables gives the contents from which daily, 
monthly, or ycariy changes then are determined. If the stage-content relation changes because of deposition of sediment in a lake 
or reservoir, periodic resurveys may be necessary to redefine the relation. When this is done, the contents computed may become 
increasingly in error as time increases since the last survey. Discharges over lake or reservoir spillways are computed from stage- 
discharge relations in the same manner as other stream discharges are computed. 



WATER RESOURCES DATA— CALIFORNIA, WATER YEAR 1 997 5 

For some gaging stations, there are periods when no gage-height record is obtained, or the recorded gage height is so faulty 
that it cannot be used to compute daily discharge or contents. This happens when the recorder stops or otherwise fails to operate 
properly, intakes are plugged, the float is frozen in the well, or for various other reasons. For such periods, the daily discharges are 
estimated from the recorded range in stage, previous or following record, discharge measurements, weather records, and 
comparison with other station records from the same or nearby basins. Likewise, daily contents may be estimated from operator's 
logs, previous or following records, inflow-outflow studies, and other information. Information explaining how estimated daily- 
discharge values are identified in station records is included in the next two sections, "Data Presentation" (REMARKS paragraph) 
and "Identifying Estimated Daily Discharge." 

Data Presentation 

Streamflow data in this report are presented in a new format that is considerably different from the format in data reports 
prior to the 1991 water year. The major changes are that statistical characteristics of discharge now appear in tabular summaries 
following the water- year data table and less information is provided in the text or station manuscript above the table. These changes 
represent the results of a pilot program to reformat the annual water-data report to meet current user needs and data preferences. 

The records published for each continuous-record surface-water discharge station (gaging station) now consist of four parts, 
the manuscript or station description; the data table of daily mean values of discharge for the current water year with summary data; 
a tabular statistical summary of monthly mean flow data for a designated period, by water year; and a summary statistics table that 
includes statistical data of annual, daily, and instantaneous flows as well as data pertaining to annual runoff, 7-day low-flow 
minimums, and flow duration. 

Station manuscript 

The manuscript provides, under various headings, descriptive information, such as station location; period of record; 
historical extremes outside the period of record; record accuracy; and other remarks pertinent to station operation and regulation. 
The following information, as appropriate, is provided with each continuous record of discharge or lake content. Comments to 
follow clarify information presented under the various headings of the station description. 

LOCATION.— Information on locations is obtained from the most accurate maps available. The location of the gaging 
station is given with respect to the cultural and physical features in the vicinity and with respect to the reference place mentioned 
in the station name. River mileages, given for only a few stations, were determined by methods given in "River Mileage 
Measurement," Bulletin 14, Revision of October 1968, prepared by the Water Resources Council, or were provided by the U.S. 
Army Corps of Engineers. 

DRAINAGE AREA. — Drainage areas are measured using the most accurate maps available. Because the type of maps 
available varies from one drainage basin to another, the accuracy of drainage areas likewise varies. Drainage areas are updated as 
better maps become available. 

PERIOD OF RECORD.— This indicates the period for which there are published records for the station or for an equivalent 
station. An equivalent station is one that was in operation at a time when the present station was not. and whose location was such 
that records from it reasonably can be considered equivalent with records from the present station. 

REVISED RECORDS. — Published records, because of new information, occasionally are incorrect, and revisions are 
printed in later reports. Listed under this heading are all the reports in which revisions have been published for the station and the 
water years to which the revisions apply. If a revision did not include daily, monthly, or annual figures of discharge, that fact is 
noted after the year dates as follows: "(M)" means that only the instantaneous maximum discharge was revised; "(m)" that only the 
instantaneous minimum was revised; and "(P)" that only peak discharges were revised. If the drainage area has been revised, the 
report is given in which the most recently revised figure was published. 

GAGE.— The type of gage currently in use, the datum of the current gage referred to sea level (see glossary), and a 
condensed history of the types, locations, and datums of previous gages are given under this heading. 

REMARKS.— All periods of estimated daily-discharge record will either be identified by date in this paragraph of the station 
description for water-discharge stations or flagged in the daily-discharge table. (See next section, "Identifying Estimated Daily 
Discharge.") If a REMARKS paragraph is used to identify estimated record, the paragraph will begin with this information 
presented as the first entry. The paragraph also is used to present information relative to the accuracy of the records, to special 
methods of computation, to conditions that affect natural flow at the station, and possibly to other pertinent items. For reservoir 
stations, information is given on the dam forming the reservoir, the capacity, outlet works and spillway, and purpose and use of the 
reservoir. 

COOPERATION. — Records provided by a cooperating organization or obtained for the U.S. Geological Survey by a 
cooperating organization are identified. 

EXTREMES FOR PERIOD OF RECORD.— Extremes may include maximum and minimum discharges or content. Unless 
otherwise qualified, the maximum discharge or content is the instantaneous maximum corresponding to the highest stage that 
occurred. The highest stage may have been obtained from a graphic or digital recorder, a crest-stage, or by direct observation of a 
nonrecording gage. If the maximum stage did not occur on the same day as the maximum discharge or content, it is given separately. 



6 WATER RESOURCES DATA— CALIFORNIA, WATER YEAR 1997 

Similarly, the minimum is ihc instantaneous minimum discharge, unless otherwise qualiHed, and was determined and Is reported 
in the same manner as the maximum. 

EXTREMES OUTSIDE PERIOD OF RECORD— Included is information concerning major floods or unusually low flows 
that occurred outside the stated period of record. The information may or may not have been obtained by the U.S. Geological 
Survey. 

EXTREMES FOR CURRENT YEAR. — Extremes given are similar to those for the period of record, except the peak 
discharge listing may include secondary peaks. For stations meeting cenain criteria, all peak discharges and stages occurring during 
the water year that are greater than a selected base discharge are presented under this heading. The peaks greater than the base 
discharge, excluding the highest one, are referred to as secondary peaks. Peak discharges are not published for canals, ditches, 
drains, or streams for which the peaks are subject to substantial control by man. The time of occurrence for peaks is expressed in 
24-hour local standard time. For example, 12;30 a.m. is 0030, and 1 :30 p.m. is 1330. The minimum for the current water year 
appears below the table of peak data. 

REVISIONS. — If a critical error is discovered in published records, a revision is included in the first report published 
following discovery of the error. 

Occasionally the records of a discontinued gaging station may need revision. Because for these stations there would be no 
current or, possible, future station manuscript published to document the revision in a "Revised Records" entry, users of data for 
these stations who obtained the record from previously published data reports may wish to contact the District Office to determine 
if the published records were revised after the station was discontinued. If the data were obtained by computer retrieval, the data 
would be current and there would be no need to check because any published revision of data is always accompanied by revision 
of the corresponding data in computer storage. 

Manuscript information for lake or reservoir stations differs from that for stream-gaging stations in the nature of the 
"Remarks" and in the inclusion of a skeleton stage-capacity table when daily contents are given. 

Data table of daily mean values 

The daily table of discharge records for stream-gaging stations gives mean discharge for each day of the water year. In the 
monthly summary for the table, the line headed "TOTAL" gives the sum of the daily figures for each month; the line headed 
"MEAN" gives the average fiow in cubic feet per second for the month; and the lines headed "MAX" and "MIN" give the maximum 
and minimum daily mean discharges, respectively, for each month. Discharge for the month also usually is expressed in cubic feet 
per second per square mile (line headed "CFSM"); or in inches (line headed "IN."); or in acre-feet (line headed "AC-FT"). Figures 
for cubic feet per second per square mile and runoff in inches or in acre-feet may be omitted if there is extensive regulation or 
diversion or if the drainage area includes large noncontributing areas. At some stations monthly and (or) yeady observed discharges 
are adjusted for reservoir storage or diversion, or diversion data or reservoir contents are given. These figures are identified by a 
symbol and corresponding footnote. 

Statistics of monthly mean data 

A tabular summary of the mean (line headed "MEAN"), maximum (line headed "MAX"), and minimum (line headed "MIN") 
of monthly mean flows for each month for a designated period is provided below the mean values table. The water years of the first 
occurrence of the maximum and minimum monthly flows are provided immediately below those figures. The designated period 

will be expressed as "FOR WATER YEARS - , BY WATER YEAR (WY)." and will list the first and last water years of the 

range of years selected froiti the PERIOD OF RECORD paragraph in the station manuscript. It will consist of all of the station 
record within the specified water years, inclusive, including complete months of record for partial water years, if any, and may 
coincide with the period of record for the station. The water years for which the statistics are computed will be consecutive, unless 
a break in the station record is indicated in the manuscript. 

Summary statistics 

A table titled "SUMMARY STATISTICS" follows the statistics of monthly mean data tabulation. This table consists of four 
columns, with the first column containing the line headings of the statistics being reported. The table provides a statistical summary 
of yearly, daily, and instantaneous flows, not only for the current water year but also for the previous calendar year and for a 

designated period, as appropriate. The designated period selected, "WATER YEARS - ," will consist of all of the station 

record within the specified water years, inclusive, including complete months of record for partial water years, if any, and may 
coincide with the period of record for the station. The water years for which the statistics are computed will be consecutive, unless 
a break in the station record is indicated in the manuscript. All of the calculations for the statistical characteristics designated 
ANNUAL (see line headings below), except for the "ANNUAL 7-DAY MINIMUM" statistic, are calculated for the designated 
period using complete water years. The other statistical characteristics may be calculated using partial water years. 

The date or water year, as appropriate, of the first occurrence of each statistic reporting extreme values of discharge is 
provided adjacent to the statistic. Repeated occurrences may be noted in the REMARKS paragraph of the manuscript or in 
footnotes. Because the designated period may not be the same as the station period of record published in the manuscript, 
occasionally the dates of occurrence listed for the daily and instantaneous extremes in the designated-period column may not be 
within the selected water years listed in the heading. When this occurs, it will be noted in the REMARKS paragraph or in footnotes. 



WATER RESOURCES DATA-CALIFORNIA, WATER YEAR 1 997 7 

Selected streamflow duration curve statistics and runoff data also are given. Runoff data may be omitted if there is extensive 
regulation or diversion of How in the drainage basin. 

The following summary statistics data, as appropriate, are provided with each continuous record of discharge. Comments to 
follow clarify information presented under the various line headings of the summary statistics table. 

ANNUAL TOTAL. — The sum of the daily mean values of discharge for the year. At some stations the annual total discharge 
is adjusted for reservoir storage or diversion. The adjusted figures are identified by a symbol and corresponding 
footnotes. 
ANNUAL MEAN. — The arithmetic mean of the individual daily mean discharges for the year noted or for the designated 
period. At some stations the yearly mean discharge is adjusted for reservoir storage or diversion. The adjusted figures 
are identified by a symbol and corresponding footnotes. 
HIGHEST ANNUAL MEAN. — ^The maximum annual mean discharge occurring for the designated period. 
LOWEST ANNUAL MEAN.— The minimum annual mean discharge occurring for the designated period. 
HIGHEST DAILY MEAN.— The maximum daily mean discharge for the year or for the designated period. 
LOWEST DAILY MEAN.— The minimum daily mean discharge for the year or for the designated period. 
INSTANTANEOUS PEAK FLOW. — The maximum instantaneous discharge occurring for the water year or for the 
designated period. Note that secondary instantaneous peak discharges above a selected base discharge are stored in 
District computer files for stations meeting certain criteria. Those discharge values may be obtained by writing to the 
District Office. (See address on back of title page of this report.) 
INSTANTANEOUS PEAK STAGE.— The maximum instantaneous stage occurring for the water year or for the designated 
period. If the dates of occurrence for the instantaneous peak flow and instantaneous peak stage differ, the REMARKS 
paragraph in the manuscript or a footnote may be used to provide further information. 
INSTANTANEOUS LOW FLOW.— The minimum instantaneous discharge occurring for the water year or for the 

designated period. 
ANNUAL RUNOFF. — Indicates the total quantity of water in runoff for a drainage area for the year. Data reports may use 
any of the following units of measurement in presenting annual runoff data: 
Acre-foot ( AC-FT) is the quantity of water required to cover 1 acre to a depth of 1 foot and is equal to 43,560 cubic feet 

or about 326,000 gallons or 1 ,233 cubic meters. 
Cubic feet per second per square mile (CFSM) is the average number of cubic feet of water flowing per second from 

each square mile of area drained, assuming that the runoff is distributed uniformly in time and area. 
Inches (IN.) indicates the depth to which the drainage area would be covered if all the runoff for a given period were 
distributed on it uniformly. 
10 PERCENT EXCEEDS.— The discharge that is exceeded 10 percent of the time for the designated period. 
50 PERCENT EXCEEDS.— The discharge that is exceeded 50 percent of the time for the designated period. 
90 PERCENT EXCEEDS. — The discharge that is exceeded 90 percent of the time for the designated period. 
Data collected at partial-record stations follow the information for continuous-record sites. Data for partial-record discharge 
stations are presented in two tables. The first is a table of annual maximum stage and discharge at crest-stage stations, and the second 
is a table of discharge measurements at low-flow partial-record stations. The tables of partial-record stations are followed by a 
listing of discharge measurements made at sites other than continuous-record or partial-record stations. These measurements 
generally are made in times of drought or flood to give better areal coverage to those events. Those measurements and others 
collected for some special reason are called measurements at miscellaneous sites. 

Identifying Estimated Daily Discharge 

Estimated daily-discharge values published in the water-discharge tables of annual State data reports are identified either by 
flagging individual daily values with the letter symbol "e" and printing the table footnote, "e Estimated," or by listing the dates of 
the estimated record in the REMARKS paragraph of the station description. 

Accuracy of the Records 

The accuracy of streamflow records depends primarily on (1) the stability of the stage-discharge relation or, if the control is 
unstable, the frequency of discharge measurements; and (2) the accuracy of measurements of stage and discharge, and interpretation 
of records. 

The accuracy attributed to the records is indicated under "REMARKS." "Excellent" means that about 95 percent of the daily 
discharges are within 5 percent of the true; "good," within 10 percent; and "fair," within 15 percent. Records that do not meet the 
criteria mentioned, are rated "poor." Different accuracies may be attributed to different parts of a given record. 

Daily mean discharges in this report are given to the nearest hundredth of a cubic foot per second (ff /s) for values less than 
1 ft^/s, to the nearest tenth between 1 .0 and 10 tvVs, to whole numbers between 10 and 1,000 ftVs, and to three significant figures 



8 WATER RESOURCES DATA— CALIFORNIA, WATER YEAR 1997 

for more than 1 ,000 ft'/s. The number of signiFicant figures used is based solely on the magnitude of the discharge value. The same 
rounding rules apply to discharges listed for partial -record stations and miscellaneous sites. 

Discharge at many stations, as indicated by the monthly mean, may not reflect natural runoff due to the effects of diversion, 
consumption, regulation by storage, increase or decrease in evaporation due to artificial causes, or to other factors. For such stations, 
figures of cubic feet per second per square mile and of runoff, in inches, are not published unless satisfactory adjustments can be 
made for diversions, for changes in contents of reservoirs, or for other changes incident to use and control. Evaporation from a 
reservoir is not included in the adjustments for changes in reservoir contents, unless it is so stated. Even at those stations where 
adjustments are made, large errors in computed runoff may occur if adjustments or losses are large in comparison with the measured 
discharge. 

Other Records Available 

The National Water Data Exchange (NAWDEX), U.S. Geological Survey, Reston, VA 20192, maintains an index of sites 
as well as an index of records of discharge collected by other agencies but not published by the U.S. Geological Survey. Information 
on records at specific sites can be obtained from that office upon request. 

Information used in the preparation of the records in this publication, such as discharge measurement notes, gage-height 
records, temperature measurements, and rating tables are on file in the District Office. Also, most of the daily mean discharges are 
in computer-readable form and have been analyzed statistically. Information on the availability of the unpublished information or 
on the results of statistical analyses of the published records may be obtained from the District Office. 

Records of Surface-Water Quality 

Records of surface-water quality ordinarily are obtained at or near stream-gaging stations because interpretation of records 
of surface-water quality nearly always requires corresponding discharge data. Records of surface-water quality in this report may 
involve various types of data and measurement frequencies. 

Classification of Records 

Water-quality data for surface-water sites are grouped into one of three classifications. A coniinuing-record station is a site 
where data are collected on a regularly scheduled basis. Frequency may be one or more times daily, weekly, monthly, or quarterly. 
A partial-record station is a site where limited water-quality data are collected systematically over a period of years. Frequency of 
sampling is usually less than quarterly. A miscellaneous sampling site is a location other than a continuing or partial-record station, 
where random samples are collected to give better areal coverage to define water-quality conditions in the river basin. 

A careful distinction needs to be made between "continuing records" as used in this report and "continuous recordings," 
which refers to a continuous graph or a series of discrete values punched at short intervals on a paper tape or stored electronically 
in a data logger. Some records of water quality, such as temperature and specific conductance, may be obtained through continuous 
recordings; however, because of costs, most data are obtained only monthly or less frequently. Locations of stations for which 
records on the quality of surface water appear in this report are shown in figures 2 through 23. 

Arrangement of Records 

Water-quality records collected at a surface-water daily record station are published immediately following that record, 
regardless of the frequency of sample collection. Station number and name are the same for both records. Where a surface-water 
daily record station is not available or where the water quality differs significantly from that at the nearby surface-water station, the 
continuing water-quality record is published with its own station number and name in the regular downstream order sequence. 
Water-quality data for partial-record stations and for miscellaneous sampling sites appear in separate tables following the table of 
discharge measurements at miscellaneous sites. 

Onsite Measurements and Sample Collection 

In obtaining water-quality data, a major concern is the assurance that the data obtained represent the in-situ quality of the 
water. To assure this, certain measurements, such as water temperature. pH, and dissolved oxygen, are made onsite when samples 
are taken. To assure that measurements made in the laboratory also represent the in-situ water, carefully prescribed procedures are 
followed in collecting the samples, in treating the samples to prevent changes in quality pending analysis, and in shipping the 
samples to the laboratory. Procedures for onsite measurements and for collecting, treating, and shipping samples are given in 
"Techniques of Water-Resources Investigations," Book 1 , Chapter D2; Book 3. Chapter C2; and Book 5, Chapters A 1 , A3, and A4. 
All these references are listed in the section "Publications on Techniques of Water-Resources Investigations." Also, detailed 
information on collecting, treating, and shipping samples may be obtained from the District Office. 



WATER RESOURCES DATA— CALIFORNIA, WATER YEAR 1997 9 

One sample can adequately define the water quality at a given time if the mixture of solutes throughout the stream cross 
section is homogeneous. However, the concentration of solutes at different locations in the cross section may vary widely with 
different rates of water discharge, depending on the source of material and the turbulence and mixing of the stream. Some streams 
must be sampled through several vertical sections to obtain a representative sample needed for an accurate mean concentration and 
for use in calculating load. All samples obtained for the National Stream-Quality Accounting Network (see definitions) are obtained 
from at least several verticals. Whether samples are obtained from the centroid of flow or from several verticals depends on flow 
conditions and other factors which must be evaluated by the collector. 

Chemical-quality data published in this report are considered to be the most representative value available for the stations 
listed. The values reported represent water-quality conditions at the time of sampling as much as possible, consistent with available 
sampling techniques and methods of analysis. In the rare case where an apparent inconsistency exists between a reported pH value 
and the relative abundance of carbon dioxide species (carbonate and bicarbonate), the inconsistency is the result of a slight uptake 
of carbon dioxide from the air by the sample between measurement of pH in the field and determination of carbonate and 
bicarbonate in the laboratory. 

For chemical-quality stations equipped with digital monitors, the records consist of daily maximum and minimum values for 
each constituent measured and are based on hourly punches beginning at 0100 hours and ending at 2400 hours for the day of record. 
More detailed records (hourly values) may be obtained from the District Office. 

Historical and current (1997) dissolved trace-element concentrations are reported herein for water that was collected, 
processed, and analyzed by using either ultraclean or other than ultraclean techniques. If ultraclean techniques were used, then those 
concentrations are reported in nanograms per liter (ng/L). If other than ultraclean techniques were used, then those concentrations 
are reported in micrograms per liter (Hg/L) and could reflect contamination introduced during some phase of the procedure. 

Water Temperature 

Water temperatures are measured at the water-quality stations. In addition, water temperatures are taken at time of discharge 
measurements for water-discharge stations. For stations where water temperatures are taken manually once or twice daily, the water 
temperatures are taken at about the same time each day. Large streams have a small diurnal temperature change; shallow streams 
may have a daily range of several degrees and may follow closely the changes in air temperature. Some streams may be affected by 
waste-heat discharges. 

At stations where recording instruments are used, either mean temperatures or maximum and minimum temperatures for 
each day are published. Water temperatures measured at the time of water-discharge measurements are on file in the District Office. 

Sediment 

Suspended-sediment concentrations are determined from samples collected by using depth-integrating samplers. Samples 
usually are obtained at several verticals in the cross section, or a single sample may be obtained at a fixed point and a coefficient 
applied to determine the mean concentration in the cross section. 

During periods of rapidly changing flow or rapidly changing concentration, samples may have been collected more 
frequently (twice daily or, in some instances, hourly). The published sediment discharges for days of rapidly changing flow or 
concentration were computed by the subdivided-day method (time-discharge weighted average). Therefore, for those days when 
the published sediment discharge value differs from the value computed as the product of discharge times mean concentration times 
0.0027, the reader can assume that the sediment discharge for that day was computed by the subdivided-day method. For periods 
when no samples were collected, daily discharges of suspended sediment were estimated on the basis of water discharge, sediment 
concentrations measured immediately before and after the periods, and suspended-sediment loads for other periods of similar 
discharge. Methods used in the computation of sediment records are described in the TWRI Book 3, Chapters CI and C3. These 
methods are consistent with the ASTM standards and generally follow ISO standards. 

At other stations, suspended-sediment samples were collected periodically at many verticals in the stream cross section. 
Although data collected periodically may represent conditions only at the time of observation, such data are useful in establishing 
seasonal relations between quality and streamflow and in predicting long-term sediment-discharge characteristics of the stream. 

In addition to the records of suspended-sediment discharge, records of the periodic measurements of the particle-size 
distribution of suspended sediment, bed material, and bedload are included for some stations. 

Estimates of bedload and total-sediment discharge are included for some stations. Computations of monthly bedload 
discharges are based on the relation between instantaneous water discharge and corresponding bedload discharge for the station. 
Values of bedload discharge used in defining this relation are based on samples obtained by use of the Helley-Smith or BL 84 
bedload samplers or by modified-Einstein or Meyer-Peter Muller computation procedures. Application of the bedload-transport 
relation at a station was made on a daily basis or subdivided-day basis. The bedload samplers are designed to collect time-weighted 
samples for the sediment moving within 0.25 ft of the streambed. Sediment moving in this portion of the flow cannot be sampled 
with standard suspended-sediment samplers. Calibration of the bedload samplers has not been completed, and a trap efficiency of 
1 .0 has been assumed applicable to these devices. Error sources in the theoretical methods, based on analysis of bed-material 



10 WATER RESOURCES DATA-CALIFORNIA, WATER YEAR 1997 

characteristics, channel geometry, and associated hydraulic factors, are also undefined. In consequence, figures of bedload 
discharge must be used with caution. They are estimates, at best, and are subject to revision. 

Cross-Sectional Data 

Cross-sectional surveys of water temperature, pH, specific conductance, dissolved oxygen, and suspended sediment are done 
at all NASQAN and Hydrologic bench-mark stations during various seasons and surface-water discharges. Documentation of cross- 
section variation of water quality is essential in order to determine how many samples in a cross section are necessary to ensure a 
representative composite sample. 

Laboratory Measurements 

Sediment samples, samples for biochemical-oxygen demand (BOD), samples for indicator bacteria, and daily samples for 
specific conductance are analyzed locally. All other samples are analyzed in the U.S Geological Survey's National Water-Quality 
Laboratory in Arvada, Colorado. Methods used to analyze sediment samples and to compute sediment records are described in the 
Techniques of Water-Resources Investigations. Book 5. Chapter CI. Methods used by the U.S. Geological Survey laboratories are 
given in TWRI Book 1 . Chapter D2; Book 3. Chapter C2; and Book 5. Chapters Al . A3. A4. and A5. These methods are consistent 
with ASTM standards and generally follow ISO standards. 

Water Quality-Control Data 

Data generated from quality-control (QC) samples are a requisite for evaluating the quality of the sampling and processing 
techniques as well as data from the actual samples themselves. Without QC data, environmental sample data cannot be adequately 
interpreted because the errors associated with the sample data are unknown. The various types of QC samples collected by this 
District are describe in the following section. Procedures have been established for the storage of water-quality-control data within 
the U. S. Geological Survey. These procedures allow for storage of all derived QC data and are identified so that they can be related 
to corresponding environmental samples. 

Blank Samples 

Blank samples are collected and analyzed to ensure the environmental samples have not been contaminated by the overall 
data-collection process. The blank solution used to develop specific types of blank samples is a .solution that is free of the analytes 
of interest. Any measured value signal in a blank sample for an analyte (a specific component measured in a chemical analysis) that 
was absent in the blank solution is believed to be due to contamination. There are many types of blank samples possible, each 
designed to segregate a different part of the overall data-collection process. The types of blank samples collected in this District are: 
Field blank — a blank solution that is subjected to all aspects of sample collection, field processing preservation. 

transportation, and laboratory handling as an environmental sample. 

Trip blank — a blank solution that is put in the same type of bottle used for an environmental sample and kept with the 
set of sample bottles before and after sample collection. 

Equipment blank — a blank solution that is processed through all equipment used for collecting and processing an 
environmental sample (similar to a field blank but normally done in the more controlled conditions of the office). 

Sampler blank — a blank solution that is poured or pumped through the same field sampler used for collecting an 
environmental sample. 

Filter blank — a blank solution that is filtered in the same manner and through the same filter apparatus used for an 
environmental sample. 

Splitter blank — a blank solution that is mixed and separated using a field splitter in the same manner and through the 
same apparatus used for an environmental sample. 

Preservation blank — a blank solution that is treated with the sampler preservatives used for an environmental sample. 
Reference Samples 

Reference material is a solution or material prepared by a laboratory whose composition is certified for one or more 
properties so that it can be used to assess a measurement method. Samples of reference material are submitted for analysis to ensure 
that an analytical method is accurate for the known properties of the reference material. Generally, the selected reference material 
properties are similar to the environmental sample properties. 

Replicate Samples 

Replicate samples are a set of environmental samples collected in a manner such that the samples are thought to be essentially 
identical in composition. Replicate is the general case for which a duplicate is the special case consisting of two samples. Replicate 
samples are collected and analyzed to establish the amount of variability in the data contributed by some part of the collection and 



WATER RESOURCES DATA— CALIFORNIA, WATER YEAR 1997 11 

analytical process. There are many types of replicate samples possible, each of which may yield slightly different results in a 
dynamic hydrologic setting, such as a flowing stream. The types of replicate samples collected in this District are: 

Sequential samples — a type of replicate sample in which the samples are collected one after the other, typically over a 
short time. 

Split sample — a type of replicate sample in which a sample is split into subsamples contemporaneous in time and space. 

Spike Samples 

Spike samples are samples to which known quantities of a solution with one or more well-established analyte concentrations 
have been added. These samples are analyzed to determine the extent of matrix interference or degradation on the analyte 
concentration during sample processing and analysis. 

Data Presentation 

For continuing-record stations, information pertinent to the history of station operation is provided in descriptive headings 
preceding the tabular data. These descriptive headings give details regarding location, drainage area, period of record, type of data 
available, instrumentation, general remarks, cooperation, and extremes for parameters currently measured daily. Tables of 
chemical, physical, biological, radiochemical data, and other data obtained at a frequency less than daily are presented first. Tables 
of "daily values" of specific conductance, pH, water temperature, dissolved oxygen, and suspended sediment follow in sequence. 

In the descriptive headings, if the location is identical to that of the discharge gaging station, neither the LOCATION nor the 
DRAINAGE AREA statements are repeated. The following information, as appropriate, is provided with each continuous-record 
station. Comments that follow clarify information presented under the various headings of the station description. 

LOCATION. — See Data Presentation under "Records of Stage and Water Discharge"; same comments apply. 

DRAINAGE AREA. — See Data Presentation under "Records of Stage and Water Discharge"; same comments apply. 

PERIOD OF RECORD. — This indicates the periods for which there are published water-quality records for the station. The 
periods are shown separately for records of parameters measured daily or continuously and those measured less than daily. For those 
measured daily or continuously, periods of record are given for the individual parameters. 

INSTRUMENTATION. — Information on instrumentation is given only if a water-quality monitor, temperature recorder, 
sediment pumping sampler, or other sampling device is in operation at a station. 

REMARKS. — Remarks provide added information pertinent to the collection, analysis, or computation of the records. 

COOPERATION. — Records provided by a cooperating organization or obtained for the U.S. Geological Survey by a 
cooperating organization are identified here. 

EXTREMES. — Maximums and minimums are given only for parameters measured daily or more frequently. None are given 
for parameters measured weekly or less frequently because the true maximums or minimums may not have been sampled. Extremes, 
when given, are provided for both the period of record and for the current water year. 

REVISIONS. — If errors in water-quality records are discovered after publication, appropriate updates are made to the 
Water-Quality File in the U.S. Geological Survey's computerized data system. National Water Information System (NWIS), and 
subsequently by monthly transfer of update transactions to the U.S. Environmental Protection Agency's STORET system. Because 
the usual volume of updates makes it impractical to document individual changes in the State data-report series or elsewhere, 
potential users of U.S. Geological Survey water-quality data are encouraged to obtain all required data from the appropriate 
computer file to ensure the most recent updates. 

The surface-water-quality records for partial-record stations and miscellaneous sampling sites are published in separate 
tables following the table of discharge measurements at miscellaneous sites. No descriptive statements are given for these records. 
Each station is published with its own station number and name in the regular downstream-order sequence. 

ACCESS TO USGS WATER DATA 

The U.S. Geological Survey provides near real-time stage and discharge data for many of the gaging stations equipped with 
the necessary telemetry and historic daily-mean and peak-flow discharge data for most current or discontinued gaging stations 
through the worid wide web (WWW). These data may be accessed at 

http://water.usgs.gov. 

Some water-quality and ground-water data also are available through the WWW. In addition, data can be provided in various 
machine-readable formats on magnetic tape or 3-1/2 inch floppy disk. Information about the availability of specific types of 
additional data or products, and user charges, can be obtained locally from each of the Water Resources Division District Offices. 
(See address on the back of the title page.) 



12 WATER RESOURCES DATA— CALIFORNIA, WATER YEAR 1997 

DEFINITION OF TERMS 

Terms related to streamflow, water-quality, and other hydrologic data, as used in this report are defined below. See the table 
for converting inch-pound units to International System (SI) Units on the inside of the back cover. 

Acre-foot (AC-FT, acre-ft) is the quantity of water required to cover 1 acre to a depth of 1 foot and is equivalent to 43,560 
cubic feet or about 326.000 gallons or 1 .233 cubic meters. 

Adenosine triphosphate (ATP) is an organic, phosphate-rich, compound important in the transfer of energy in organisms. Its 
central role in living cells makes it an excellent indicator of the presence of living material in water. A measure of ATP therefore 
provides a sensitive and rapid estimate of biomass. ATP is reported in micrograms per liter of the original water sample. 

Algae are mostly aquatic single-celled, colonial, or multicelled plants, containing chlorophyll and lacking roots, stems, and 
leaves. 

Algal growth potential (AGP) is the maximum algal dry weight biomass that can be produced in a natural water sample under 
standardized laboratory conditions. The growth potential is the algal biomass present at stationary phase and is expressed as 
milligrams dry weight of algae produced per liter of sample. 

Aquifer is a geologic formation, group of formations, or part of a formation that contains sufficient saturated permeable 
material to yield significant quantities of water to wells and springs. 

Artesian means confined and is used to describe a well in which the water level stands above the top of the aquifer tapped 
by a well. A flowing artesian well is one in which the water level is above the land surface. 

Bacteria are microscopic unicellular organisms, typically spherical, rodlike, or spiral and threadlike in shape, often clumped 
into colonies. Some bacteria cause disease; others perform an essential role in nature in the recycling of materials, for example, 
decomposing organic matter into a form available for reuse by plants. 

Total conform bacteria are a particular group of bacteria that are used as indicators of possible sewage pollution. They 
are characterized as aerobic or facultative anaerobic, gram-negative, nonspore-forming, rod-shaped bacteria which ferment 
lactose with gas formation within 48 hours at 35°C. For the membrane filter method, these bacteria are defined as the 
organisms which produce colonies with a golden-green metallic sheen within 24 hours when incubated at 35°C + 0.5°C on 
M-Endo medium (nutrient medium for bacterial growth). Their concentrations are expressed as number of colonies per 100 
milligrams per liter of sample. 

Fecal-coliform bacteria are bacteria that are present in the intestines or feces of warm-blooded animals. They are often 
used as indicators of the sanitary quality of the water. For the membrane filter method, they are defined as all organisms 
which produce blue colonies within 24 hours when incubated at 44.5°C + 0.2°C on M-FC medium (nutrient medium for 
bacterial growth). Their concentrations are expressed as number of colonies per 100 milligrams per liter of sample. 

Fecal -streptococcal bacteria are bacteria found in intestines of warm-blooded animals. Their presence in water is 
considered to verify fecal pollution. They are characterized as gram-positive, cocci bacteria which are capable of growth in 
brain-heart infusion broth. For the membrane filter method they are defined as all the organisms which produce red or pink 
colonies within 48 hours at 35°C + 0.5°C on KF streptococcus medium (nutrient medium for bacterial growth). Their 
concentrations are expressed as number of colonies per 100 milligrams per liter of sample. 

Bed material is the unconsolidated material of which a streambed, lake, pond, reservoir, or estuary bottom is composed. 
Benthic organisms (invertebrates) are the group of animals living in or on the bottom of an aquatic environment. They 

include a number of types of organisms, such as bacteria, fungi, insect larvae and nymphs, snails, clams, and crayfish. 

Biochemical oxvgen demand (BOD) is a measure of the quantity of dissolved oxygen, in milligrams per liter, necessary for 

the decomposition of organic matter by micro-organisms, such as bacteria. 

Biomass is the amount of living matter present at any given time, expressed as the mass per unit area or volume of habitat. 
Ash mass is the mass or amount of residue present after the residue from the dry mass determination has been ashed in 
a muffle furnace at a temperature of 500°C for 1 hour. The ash mass values of zooplankton and phytoplankton are expressed 
in grams per cubic meter (g/m^) and periphyton and benthic organisms in grams per square meter (g/m"). 

Dry mass refers to the mass of residue present after drying in an oven at 105°C for zooplankton and periphyton, until 
the mass remains unchanged. This mass represents the total organic matter, ash and sediment, in the sample. Dry mass values 
are expressed in the same units as ash mass. 

Organic mass or volatile mass of the living substance is the difference between the dry mass and ash mass, and 
represents the actual mass of the living matter. The organic mass is expressed in the same units as for ash mass and dry mass. 

Wet mass is the mass of living matter plus contained water. 

Bottom material : See Bed material. 

Cell volume determination is one of several common methods used to estimate biomass of algae in aquatic systems. Cell 
numbers of algae are frequently used in aquatic surveys as an indicator of algal production. However, cell numbers alone cannot 
represent true biomass because of considerable cell-size variation among the algal species. Cell volume (urn' ) is determined by 
obtaining critical cell measurements on cell dimensions (that is, length, width, height, or radius) for 20 to 50 cells of each important 
species to obtain an average biovolume per cell. Cells are categorized according to the correspondence of their cellular shape to the 



WATER RESOURCES DATA— CALIFORNIA, WATER YEAR 1997 13 

nearest geometric solid or combinations of simple solids (that is, spheres, cones, or cylinders). Representative formulae used to 
compute biovolume are as follows: 

sphere 4/3 Tir^ cone 1/3 Ttr'h cylinder jir^h. 
From cell volume, total algal biomass expressed as biovolume (Ttm-^mL) is thus determined by multiplying the number of cells of 
a given species by its average cell volume and then summing these volumes over all species. 

Cells per volume (cells/volume) refers to the number of cells of any organism thai are counted by using a microscope and 
grid or counting cell. Many planktonic organisms are multicelled and are counted according to the number of contained cells per 
sample, usually in milliliters (mL) or liters (L). 

Chemical oxygen demand (COD) is a measure of the chemically oxidizable material in the water and furnishes an 
approximation of the amount of organic and reducing material present. The determined value may correlate with natural water color 
or with carbonaceous organic pollution from sewage or industrial wastes. 

Chlorophyll refers to the green pigments of plants. Chlorophyll a and b are the two most common pigments in plants. 

Color unit is produced by 1 milligram per liter of platinum in the form of the chloroplatinate ion. Color is expressed in units 
of the platinum-cobalt scale. 

Contents is the volume of water in a reservoir or lake. Unless otherwise indicated, volume is computed on the basis of a level 
pool and does not include bank storage. 

Control designates a feature downstream from the gage that determines the stage-discharge relation at the gage. This feature 
may be a natural constriction of the channel, an artificial structure, or a uniform cross section over a long reach of the channel. 

Control structure as used in this report is a structure on a stream or canal that is used to regulate the flow or stage of the stream 
or to prevent the intrusion of saltwater. 

Cubic fool per second (ft7s) is the rate of discharge representing a volume of 1 cubic foot passing a given point during 
1 second and is equivalent to approximately 7.48 gallons per second or 448.8 gallons per minute or 0.02832 cubic meters per 
second. 

Cubic foot per second per day (cfs/d) is the volume of water represented by a flow of 1 cubic foot per second for 24 hours. 
It is equivalent to 86,400 cubic feet, approximately 1 .9835 acre-feet, or about 646,000 gallons or 2,445 cubic meters. 

Discharge is the volume of water (or more broadly, total fluid plus suspended sediment), that passes a given point within a 
given period of time. 

Mean discharge (MEAN) is the arithmetic mean of individual daily mean discharges during a specific period. 

Instantaneous discharge is the discharge at a particular instant of time. 

Annual 7-dav minimum is the lowest mean discharge for 7 consecutive days for a calendar year or a water year. Note 
that most low-flow frequency analyses of annual 7-day minimum flows use a climatic year (April 1-March 31). The date 
shown in the summary statistics table is the initial date of the 7-day period. (This value should not be confused with the 
7-day 10-year low-flow statistic.) 

Dissolved refers to that material in a representative water sample which passes through a 0.45-micrometer membrane filter. 
This is a convenient operational definition used by Federal agencies that collect water data. Determinations of "dissolved" 
constituents are made on subsamples of the filtrate. It is recognized that certain kinds of samples cannot be filtered; to provide for 
this, procedures that are considered equivalent to filtering through a 0.45-micrometer membrane filter will be identified and 
announced at a later dale. 

Dissolved-solids concentration of water is determined either analytically or by ihe "residue-on-evaporalion" method, or 
mathematically by totaling the concentrations of individual constituents reported in a comprehensive chemical analysis. During the 
analytical determination of dissolved solids, the bicarbonate (generally a major dissolved component of water) is converted to 
carbonate. Therefore, in the mathematical calculation of dissolved-solids concentration, the bicarbonate value, in milligrams per 
liter, is multiplied by 0.492 to reflect the change. 

Diversity index is a numerical expression of evenness of distribution of aquatic organisms. The formula for diversity index 
is: 

^ n 2 " 
3 = £ - log -' , 
n n 

i = l 

where n, is the number of individuals per taxon, n is the total number of individuals, and .s is the total number of taxa in the sample 
of the community. Diversity index values range from zero, when all the organisms in the samples are the same; to some positive 
number, when some or all the organisms in the sample are different. 

Drainage area of a stream at a specified location in that area, measured in a horizontal plane, enclosed by a topographic divide 
from which direct surface runoff from precipitation normally drains by gravity into the stream above the specified point. Figures of 
drainage area given include all closed basins, or noncontributing areas, within the area unless otherwise noted. 



14 WATER RESOURCES DATA— CALIFORNIA, WATER YEAR 1997 

Drainage basin is a part of the surface of the Earth that is occupied by a drainage system, which consists of a surface stream 
or body of impounded surface water, together with all tributary surface streams and bodies of impounded surface water. 

Gage datum is the elevation of the zero point of the reference gage from which gage height is determined as compared to sea 
level. This elevation is established by a system of levels from known bench marks or by approximation from topographic maps. 

Gage height (G.H.) is the waier-surface elevation referred to some arbitrary gage datum. Gage height is often used 
interchangeably with the more general term "stage," although gage height is more appropriate when used with a reading on a gage. 

Gaging station is a particular site on a stream, canal, lake, or reservoir where systematic observations of hydrologic data are 
obtained. 

Hardness of water is a physical-chemical characteristic that is commonly recognized by the increased quantity of soap that 
is required to produce lather. It is attributable to the presence of alkaline earths (principally calcium and magnesium) and is 
expressed as equivalent calcium carbonate (CaC03). 

Hydrologic Benchmark Network is a network of approximately 50 sites in small drainage basins around the country whose 
purpose is to provide consistent data on the hydrology, including water quality, and related factors in representative undeveloped 
watersheds nationwide, and to provide analyses on a continuing basis to compare and contrast conditions observed in basins more 
obviously affected by human activities. 

Hydrologic unit is a geographic area representing part or all of a surface drainage basin or distinct hydrologic feature as 
delineated by the Office of Water Data Coordination on the State Hydrologic Unit Maps; each hydrologic unit is identified by an 
eight-digit number. 

Light-attenuation coefficient , also known as the extinction coefficient, is a measure of water clarity. Light is attenuated 
according to the Lambert-Beer equation 

-\L 
I = l„e , 

where l„ is the source light intensity, / is the light intensity at length L (in meters) from the source, X is the light-attenuation 
coefficient, and e is the base of the natural logarithm. The light-attenuation coefficient is defined as 






X = -r\oe^j- 



Macrophytes are the macroscopic plants in the aquatic environment. The most common macrophytes are the rooted vascular 
plants that are usually arranged in zones in aquatic ecosystems and restricted in the area by the extent of illumination through the 
water and sediment deposition along the shoreline. 

Metamorphic stage refers to the stage of development that an organism exhibits during its transformation from an immature 
form to an adult form. This development process exists for most insects, and the degree of difference from the immature stage to 
the adult form varies from relatively slight to pronounced, with many intermediates. Examples of metamorphic stages of insects are 
egg-larva-pupa-adult or egg-nymph-adult. 

Methylene blue active substance (MB AS) is a measure of apparent detergents. This determination depends on the formation 
of a blue color when methylene blue dye reacts with synthetic detergent compounds. 

Micrograms per gram (UG/G, fig/g) is a unit expressing the concentration of a chemical constituent as the mass (micrograms) 
of the element per unit mass (gram) of material analyzed. 

Micrograms per liter (UG/L, Hg/L) is a unit expressing the concentration of chemical constituents in solution as mass 
(micrograms) of solute per unit volume (liter) of water. One thousand micrograms per liter is equivalent to 1 milligram per liter. 

Milligrams per liter (MG/L. mg/L) is a unit forexpressing the concentration of chemical constituents in solution. Milligrams 
per liter represent the mass of solute per unit volume (liter) of water. Concentration of suspended sediment also is expressed in 
milligrams per liter and is based on the mass of sediment per liter of water-sediment mixture. 

Nanograms per liter (NG/L, ng/L) is a unit expressing the concentration of chemical constituents in solution as mass 
(nanograms) of solute per unit volume (liter) of water. One million nanograms per liter is equivalent to 1 milligram per liter. 

The National Atmospheric Deposition Program/National Trends Network (NADP/NTN) provides continuous measurement 
and assessment of the chemical climate of precipitation throughout the United States. As the lead federal agency, the USGS works 
together with over 1 00 organizations to accomplish the following objectives: (1) Provide a long-term, spatial and temporal record 
of atmospheric deposition generated from a network of 191 precipitation chemistry monitoring sites. (2) Provide the mechanism to 
evaluate the effectiveness of the significant reduction in S02 emissions that began in 1995 as implementation of the Clean Air Act 
Amendments (CAAA) occurred. (3) Provide the scientific basis and nationwide evaluation mechanism for implementation of the 
Phase II CAAA emission reductions for S02 and NOx scheduled to begin in 2000. 

National Geodetic Vertical Datum of 1929 (NGVD) is a geodetic datum derived from a general adjustment of the first order 
level nets of both the United States and Canada. It was formeriy called Sea Level Datum of 1929 or mean sea level in this series of 
reports. Although the datum was derived from the average sea level over a period of many years at 26 tide stations along the 
Atlantic, Gulf of Mexico, and Pacific Coasts, it does not necessarily represent local mean sea level at any particular place. 



WATER RESOURCES DATA— CALIFORNIA, WATER YEAR 1997 15 

National Stream-Oualitv Accounting Network (NASQAN) monitors the water quality of large rivers within four of the 
Nation' s largest river basins — the Mississippi, the Columbia, the Colorado, and the Rio Grande. The network consists of 39 stations. 
Samples are collected with sufficient frequency that the flux of a wide range of constituents can be estimated. The objective of 
NASQAN is to characterize the water quality of these large rivers by measuring concentration and mass transport of a wide range 
of dissolved and suspended constituents, including nutrients, major ions, dissolved and sediment-bound heavy metals, common 
pesticides, and inorganic and organic forms of carbon. This information will be used (1 ) to describe the long-term trends and 
changes in concentration and transport of these constituents; (2) to test findings of the National Water-Quality Assessment Program 
(NAWQA); (3) to characterize processes unique to large-river systems such as storage and re-mobilization of sediments and 
associated contaminants; and (4) to refine existing estimates of off-continent transport of water, sediment, and chemicals for 
assessing human effects on the world's oceans and for determining global cycles of carbon, nutrients, and other chemicals. 

The National Water-Quality Assessment (NAWOAi Program of the U.S. Geological Survey is a long-term program with 
goals to describe the status and trends of water-quality conditions for a large, representative part of the Nation's ground- and 
surface-water resources; provide an improved understanding of the primary natural and human factors affecting these observed 
conditions and trends; and provide information that supports development and evaluation of management, regulatory, and 
monitoring decisions by other agencies. 

Nekton are the consumers in the aquatic environment and consist of large free-swimming organisms that are capable of 
sustained, directed mobility. 

Organism is any living entity, such as an insect, phytoplankter, or zooplankter. 

Organism count/area refers to the number of organisms collected and enumerated in a sample and adjusted to the 
number per unit area of the habitat, usually square meter (m^), acre, or hectare. Periphyton, benthic organisms, and 
macrophytes are expressed in these terms. 

Organism count/volume refers to the number of organisms collected and enumerated in a sample and adjusted to the 
number per sample volume, usually milliliter (mL) or liter (L). Numbers of planktonic organisms can be expressed in these 
terms. 

Total organism count is the total number of organisms collected and enumerated in any particular sample. 

Parameter code is a five-digit number used in the U.S. Geological Survey's data system. National Water Information System 
(NWIS), to uniquely identify a specific constituent. The codes used in NWIS are the same as those used in the U.S. Environmental 
Protection Agency's data system, STORET. The Environmental Protection Agency assigns and approves all requests for new codes. 

Partial-record station is a site where limited streamflow and (or) water-quality data are collected systematically over a period 
of years for use in hydrologic analyses. 

Particle size is the diameter, in millimeters (mm), of a particle determined by either sieve or sedimentation methods. 
Sedimentation methods (pipet, bottom-withdrawal tube, visual-accumulation tube) determine fall diameter of particles in distilled 
water (chemically dispersed) or in native water (the river water at the time and point of sampling). 

Particle-size classification used in this report agrees with recommendations made by the American Geophysical Union 
Subcommittee on Sediment Terminology. The classification is as follows: 

Classification Size (mm) Method of analysis 



Clay 0.00024-0.004 Sedimentation 

Silt 0.004-0.062 Sedimentation 

Sand 0.062-2.0 Sedimentation or sieve 

Gravel 2.0-64.0 Sieve 

The particle-size distributions given in this report are not necessarily representative of all particles in transport in the stream. Most 
of the organic material is removed, and the sample is subjected to mechanical and chemical dispersion before analysis in distilled 
water. Chemical dispersion is not used for native water analysis. 

Percent composition or percent of total is a unit for expressing the ratio of a particular part of a sample or population to the 
total sample or population, in terms of types, numbers, weight, or volume. 

Periphyton is the assemblage of micro-organisms attached to and living upon submerged solid surfaces. While primarily 
consisting of algae, the periphyton also include bacteria, fungi, protozoa, rotifers, and other small organisms. Periphyton are useful 
indicators of water quality. 

Pesticides are chemical compounds used to control undesirable organisms. Major categories of pesticides include 
insecticides, miticides, fungicides, herbicides, and rodenticides. Insecticides and herbicides, which control insects and plants, 
respectively, are the two categories reported. 

pH of water is the negative logarithm of the hydrogen-ion activity. Solutions with pH less than 7 are termed "acidic," and 
solutions with a pH greater than 7 are termed "basic." Solutions with a pH of 7 are neutral. The presence and concentration of many 
dissolved chemical constituents found in water are, in part, influenced by the hydrogen- ion activity of water. Biological processes 



16 WATER RESOURCES DATA— CALIFORNIA, WATER YEAR 1997 

inciudinggrowth. distribution of organisms, and toxicity of the water to organisms are also influenced, in part, by the hydrogen-ion 
activity of water. 

Picocurie (PC. pCi) is one trillionth ( 1 x 10"'") of the amount of radioactivity represented by a curie (Ci). A curie is the 
amount of radioactivity that yields 3.7 x 10 radioactive disintegrations per second. A picocurie yields 2.22 dpm (disintegrations 
per minute). 

Plankton are suspended, floating, or weakly swimming organisms that live in the open water of lakes and rivers. 

Phvtoplankton compose the plant part of the plankton. They arc usually micro.scopic, and their movement is subject to 
water currents. Phytoplankton growth is dependent upon solar radiation and nutrient substances. Because they are able to 
incorporate as well as release materials into the surrounding water, the phytoplankton have a profound effect on the quality 
of the water. They are the primary food producers in the aquatic environment and are commonly known as algae. 

Blue-green algae are phytoplankton organisms having a blue pigment in addition to the green pigment called 

chlorophyll. Blue-green algae often cause nuisance conditions in water. 

Diatoms are the unicellular or colonial algae having a siliceous shell. Their concentrations are expressed as 
number of cells per milliliter (cells/mL) of sample. 

Green algae have chlorophyll pigments similar in color to those of higher green plants. Some forms produce algal 
mats or floating "moss" in lakes. Their concentrations are expressed as number of cells per milliliter (cells/mL) of 
sample. 

Zooplankton is the animal part of the plankton. 21ooplankton are capable of extensive movements within the water 
column and are often large enough to be seen with the unaided eye. Zooplankton are secondary consumers feeding upon 
bacteria, phytoplankton, and detritus. Because they are the grazers in the aquatic environment, the zooplankton are a vital 
part of the aquatic food web. The zooplankton community is dominated by small crustaceans and rotifers. 

Polvchlorinated biphenvls (PCBs) are industrial chemicals that are mixtures of chlorinated biphenyl compounds having 
various percentages of chlorine. They are similar in structure to organochlorine insecticides. 

Primary productivity is a measure of the rate at which new organic matter is formed and accumulated through pholosynthetic 
and chemosynthetic activity of producer organisms, chiefly green plants. The rate of primary production is estimated by measuring 
the amount of carbon assimilated by plants (carbon method) or the amount of oxygen released (oxygen method). 

Milligrams of carbon per area or volume per unit time [mg C/(m"/time) for periphyton and macrophytes and 
mg C/(mVtime) for phytoplankton] are the units for expressing primary productivity. They define the amount of carbon 
dioxide consumed as measured by radioactive carbon (carbon- 14). The carbon- 14 method is of greater sensitivity than the 
oxygen light- and dark-bottle method, and is preferred for use in unenriched waters. Unit time may be either the hour or day, 
depending on the incubation period. 

Milligrams of oxygen per area or volume per unit time fmg O2 /(m'/time) for periphyton and macrophytes and 
mg OTAm /time) for phytoplankton) are the units for expressing primary productivity. They define production and 
respiration rates as estimated from changes in the measured dissolved-oxygen concentration. The oxygen light- and dark- 
bottle method is preferred if the rate of primary production is sufficient for accurate measurements to be made within 
24 hours. Unit time may be either the hour or day, depending on the incubation period. 

Recoverable from bottom material is the amount of a given constituent that is in solution after a representative sample of 
bottom material has been digested by a method (usually using an acid or mixture of acids) that results in dissolution of readily 
soluble substances. Complete dissolution of all bottom material is not achieved by the digestion treatment; thus, the determination 
represents less than the total amount (that is, less than 95 percent) of the constituent in the sample. To achieve comparability of 
analytical data, equivalent digestion procedures would be required of all laboratories performing such analyses because different 
digestion procedures are likely to produce different analytical results. 

Sea level refers to the National Geodetic Vertical Datum of 1 929 (NGVD of 1 929) — a geodetic datum derived from a general 
adjustment of the first-order level nets of both the United States and Canada, formerly called Sea Level Datum of 1929. 

Sediment is solid material that originates mostly from disintegrated rocks and is transported by, suspended in, or deposited 
from water; it includes chemical and biochemical precipitates and decomposed organic material such as humus. The quantity, 
characteristics, and cause of occurrence of sediment in streams are influenced by environmental factors. Some major factors are 
degree of slope, length of slope, soil characteristics, land usage, and quantity and intensity of precipitation. 

Bedload is the sediment that is transported in a stream by rolling, sliding, or skipping along the bed and very close to it. 
In this report, bedload is considered to consist of particles in transit within 0.25 ft (0.076 m) of the streambed. 

Bedload discharge (tons per day) is the quantity of sediment, as measured by dry weight, that moves past a section as 
bedload in a given time. 

Suspended sediment is the sediment that at any given time is maintained in suspension by the upward components of 
turbulent currents or that exists in suspension as a colloid. 

Suspended-sediment concentration is the velocity-weighted concentration of suspended sediment in the sampled zone 
(from the water surface to a point approximately 0.3 ft above the bed) expressed as milligrams of dry sediment per liter of 
water-sediment mixture (mg/L). 



WATER RESOURCES DATA— CALIFORNIA, WATER YEAR 1997 17 

Mean concentration is the time-weighted concentration of suspended sediment passing a stream section during 
a 24-hour period. 

Suspended-sediment discharge (tons per day) is the rate at which dry weight of sediment passes a section of a stream or 
is the quantity of sediment, as measured by dry mass or volume, that passes a section in a given time. It is calculated in units 
of tons per day by multiplying discharge times milligrams per liter times 0.0027. 

Suspended-sediment load (tons per day) is a general term that refers to material in suspension. It is not synonymous with 
either discharge or concentration. 

Total-sediment discharge or total-sediment load (tons per day) is the sum of suspended-sediment discharge and the 
bedload discharge. It is the total quantity of sediment, as measured by dry mass, that passes a section in a given time. 

Total-sediment load or total load is a term which refers to the total sediment (bed load plus suspended-sediment load) 
that is in transport. It is not synonymous with total-sediment discharge. 

Sodium-adsorption-ratio (SAR) is the expression of relative activity of sodium ions in exchange reactions with soil and is 
an index of sodium or alkali hazard to the soil. Waters range in respect to sodium hazard from those which can be used for irrigation 
on almost all soils to those which are generally unsatisfactory for irrigation. 

Solute is any substance that is dissolved in water. 

Specific conductance is a measure of the ability of water to conduct an electrical current. It is expressed in microsiemens per 
centimeter at 25°C. Specific conductance is related to the type and concentration of ions in solution and can be used for 
approximating dissol ved-solids concentration in water. Commonly, the concentration of dissolved solids (in milligrams per liter) is 
about 65 percent of the specific conductance (in microsiemens). This relation is not constant from stream to stream, and it may vary 
in the same source with changes in the composition of the water. 

Stage-discharge relation is the relation between gage height (stage) and the volume of water, per unit of time, flowing in a 
channel. 

Streamflow is the discharge that occurs in a natural channel. Although the term "discharge" can be applied to the flow of a 
canal, the word "streamflow" uniquely describes the discharge in a surface stream course. The term "streamflow" is more general 
than "runoff" Streamflow may be applied to discharge whether or not it is affected by diversion or regulation. 

Substrate is the physical surface upon which an organism lives. 

Natural substrate refers to any naturally occurring emersed or submersed solid surface, such as a rock or tree, upon 
which an organism lives. 

Artificial substrate is a device which is purposely placed in a stream or lake for colonization of organisms. The artificial 
substrate simplifies the community structure by standardizing the substrate from which each sample is taken. Examples of 
artificial substrates are basket samplers (made of wire cages filled with clean streamside rocks) and multiplate samplers 
(made of hardboard) for benthic-organism collection and plexiglass strips for periphyton collection. 
Surface area of a lake is the area, in square miles or acres, outlined on the latest U.S. Geological Survey topographic map as 
the boundary of the lake and measured by a planimeter. In localities not covered by topographic maps, the areas are computed from 
the best maps available. Areas shown are for the lake stage at the time the map was made. 

Surficial bed material is the part (upper 0. 1 to 0.2 ft or 0.03 to 0.06 m) of the bed material that is sampled by using U.S. Series 
Bed-Material Samplers. 

Suspended (as used in tables of chemical analyses) refers to the amount (concentration) of undissolved material in a water- 
sediment mixture. The water-sediment mixture is associated with (or sorbed on) the material retained on a 0.45-micrometer filter. 
Suspended, recoverable is the amount of a given constituent that is in solution after the part of a representative water- 
suspended sediment sample that is retained on a 0.45-micrometer membrane filter has been digested by a method (usually 
using a dilute acid solution) that results in dissolution of only readily soluble substances. Complete dissolution of all the 
particulate matter is not achieved by the digestion treatment; thus, the determination represents something less than the 
"total" amount (that is, less than 95 percent) of the constituent present in the sample. To achieve comparability of analytical 
data, equivalent digestion procedures would be required of all laboratories performing such analyses because different 
digestion procedures are likely to produce different analytical results. 

Determinations of "suspended, recoverable" constituents are made either by analyzing portions of the material collected 
on the filter or, more commonly, by difference, based on determinations of ( 1 ) dissolved and (2) total recoverable 
concentrations of the constituent. 

Suspended, total is the total amount of a given constituent in the part of a representative water-suspended sediment 
sample that is retained on a 0.45-micrometer membrane filter. This term is used only when the analytical procedure assures 
measurement of at least 95 percent of the constituent determined. A knowledge of the expected form of the constituent in 
the sample, as well as the analytical methodology used, is required to determine when the results should be reported as 
"suspended, total." 

Determinations of "suspended, total" constituents are made either by analyzing portions of the material collected on the 
filter or, more commonly, by difference, based on determinations of ( 1 ) dissolved and (2) total concentrations of the 
constituent. 



18 WATER RESOURCES DATA— CALIFORNIA, WATER YEAR 1997 

Taxonomy is the division of biology concerned with the classification and naming of organisms. The classification of 
organisms is based upon a hierarchical scheme beginning with Kingdom and ending with Species at the base. The higher the 
classification level, the fewer features the organisms have in common. For example, the taxonomy of a particular mayfly, 
Hexagenia limbata is the following: 

Kingdom Animal 

Phylum Arthropoda 

Class Insecta 

Order Ephemeroptera 

Family Ephemeridae 

Genus Hexagenia 

Species Hexagenia limbata 

Thermograph is a thermometer that continuously and automatically records, on a chart, the water temperature of a stream. 
"Temperature recorder" is the term used to indicate the presence of a thermograph or a digital mechanism that records water 
temperature in a digital format on punched paper tape. 

Time-weighted average is computed by multiplying the number of days in the sampling period by the concentrations of 
individual constituents for the corresponding period and dividing the sum of the products by the total number of days. A time- 
weighted average represents the composition of water that would be contained in a vessel or reservoir that had received equal 
quantities of water from the stream each day for the year. 

Tons per acre-foot indicates the dry mass of dissolved solids in 1 acre-foot of water. It is computed by multiplying the 
concentration in milligrams per liter by 0.00136. 

Tons per day (T/DAY) is the quantity of a substance in solution or suspension that passes a stream section during a 24-hour 
period. 

Total load (tons) is the total amount of any individual constituent, as measured by dry mass or volume, that is dissolved in a 
specific amount of water (discharge) during a given time. It is computed by multiplying the total discharge, times the milligrams 
per liter of the constituent, times the factor 0.0027, times the number of days. 

Total, recoverable is the amount of a given constituent that is in solution after a representative water-suspended sediment 
sample has been digested by a method (usually using a dilute acid solution) that results in dissolution of only readily soluble 
substances. Complete dissolution of all particulate matter is not achieved by the digestion treatment; thus, the determination 
represents something less than the "total" amount (that is, less than 95 percent) of the constituent present in the dissolved and 
suspended phases of the sample. To achieve comparability of analytical data, equivalent digestion procedures would be required of 
all laboratories performing such analyses, because different digestion procedures are likely to produce different analytical results. 

Total is the total amount of a given constituent in a representative water-suspended sediment sample, regardless of the 
constituent's physical or chemical form. This term is used only when the analytical procedure assures measurement of at least 
95 percent of the constituent present in the dissolved and suspended phases of the sample. A knowledge of the expected form is 
required to judge when the results should be reported as "total." (Note that the word "total" does double duty here, indicating both 
that the sample consists of a water-suspended sediment mixture and that the analytical method determines all the constituent in the 
sample.) 

Turbidity of a sample is the reduction of transparency due to the presence of particulate matter. In this report it is expressed 
in Nephelometric turbidity units (NTU). obtained from the Nephelometric method for turbidity determination which measures the 
intensity of light scattered by suspended particles at 90° from the path of incident light source. 

Water year in U.S. Geological Survey reports dealing with surface-water supply is the 12-month period, October 1 through 
September 30. The water year is designated by the calendar year in which it ends and which includes 9 of the 12 months. Thus, the 
year ending September 30, 1997, is called the "1997 water year." 

WDR is used as an abbreviation for "Water-Data Reports" in the summary REVISIONS paragraph to refer to previously 
published State annual basic-data reports. 

Weighted average is used in this report to indicate discharge-weighted average. It is computed by multiplying the discharge 
for a sampling period by the concentrations of individual constituents for the corresponding period and dividing the sum of the 
products by the sum of the discharges. A discharge-weighted average approximates the composition of water that would be found 
in a reservoir containing all the water passing a given location during the water year after thorough mixing in the reservoir. 

WSP is used as an abbreviation for "Water-Supply Paper" in reference to previously published reports. 



WATER RESOURCES DATA-CALIFORNIA, WATER YEAR 1997 19 

PUBLICATIONS ON TECHNIQUES OF WATER-RESOURCES INVESTIGATIONS 

The U.S. Geological Survey publishes a series of manuals describing procedures for planning and conducting specialized 
work in water-resources investigations. The material is grouped under major subject headings called books and is further divided 
into sections and chapters. For example. Section A of Book 3 (Applications of Hydraulics) pertains to surface water. The chapter, 
the unit of publication, is limited to a narrow field of subject matter. This format permits flexibility in revision and publication as 
the need arises. 

The reports listed below are for sale by the U.S. Geological Survey, Branch of Information Services, Box 25286, Federal 
Center, Denver, Colorado 80225 (authorized agent of the Superintendent of Documents, Government Printing Office). Prepayment 
is required. Remittance should be sent by check or money order payable to the U.S. Geological Survey. Prices are not included 
because they are subject to change. Current prices can be obtained by writing to the above address. When ordering or inquiring 
about prices for any of these publications, please give the title, book number, chapter number, and "U.S. Geological Survey 
Techniques of Water-Resources Investigations." 

1-Dl. Water temperature — influential factors, field measurement, and data presentation, by H.H. Stevens, Jr., J.F. Ficke, and 
G.F. Smoot: USGS— TWRI Book 1, Chapter Dl. 1975. 65 pages. 

1-D2. Guidelines for collection and field analysis of ground-water samples for selected unstable constituents, by W.W. Wood: 
USGS— TWRI Book 1, Chapter D2. 1976. 24 pages. 

2-DI . Application of surface geophysics to ground-water investigations, by A.A.R. Zohdy, G.P. Eaton, and D.R. Mabey: 
USGS— TWRI Book 2, Chapter Dl. 1974. 116 pages. 

2-D2. Application of seismic-refraction techniques to hydrologic studies, by F.P. Haeni: USGS — TWRI Book 2, Chapter D2. 
1988. 86 pages. 

2-El . Application of borehole geophysics to water-resources investigations, by W.S. Keys and L.M. MacCary: USGS — TWRI 
Book 2, Chapter EI. 1 97 1. 126 pages. 

2-E2. Borehole geophysics applied to ground-water investigations, by W.S. Keys: USGS— TWRI Book 2, Chapter E2. 1 990. 
150 pages. 

2-Fl. Application of drilling, coring, and sampling techniques to test holes and wells, by Eugene Shuter and W.E. Teasdale: 
USGS— TWRI Book 2, Chapter Fl. 1989. 97 pages. 

3-AI. General field arui office procedures for indirect discharge measurements, by M.A. Benson and Tate Dalrymple: USGS — 
TWRI Book 3, Chapter Al. 1967. 30 pages. 

3-A2. Measurement of peak discharge by slope-area method, by Tate Dalrymple and M.A. Benson: USGS — TWRI Book 3, 
Chapter A2. 1967. 12 pages. 

3-A3. Measurement of peak discharge at culverts by indirect methods, by G.L. Bodhaine: USGS — TWRI Book 3, Chapter A3. 

1968. 60 pages. 

3-A4. Measurement of peak discharge at width contractions by indirect methods, by H.F. Matthai: USGS — TWRI Book 3, 
Chapter A4. 1967. 44 pages. 

3-A5. Measurement of peak discharge at dams by indirect methods, by Harry Hulsing: USGS — TWRI Book 3, Chapter A5. 
1967. 29 pages. 

3-A6. General procedure for gaging streams, by R.W. Carter and Jacob Davidian: USGS— TWRI Book 3, Chapter A6. 1968. 
1 3 pages. 

3-A7. Stage measurements at gaging stations, by T.J. Buchanan and W.P. Somers: USGS— TWRI Book 3, Chapter A7. 1 968. 
28 pages. 

3-A8. Discharge measurements al gaging stations, by T.J. Buchanan and W.P. Somers: USGS — TWRI Book 3, Chapter A8. 

1969. 65 pages. 

3-A9. Measurement of time of travel in streams by dye tracing, by F.A. Kilpatrick and J.F. Wilson, Jr.: USGS — TWRI Book 3, 
Chapter A9. 1989. 27 pages. 

3-AIO. Discharge ratings at gaging stations, by E.J. Kennedy: USGS— TWRI Book 3, Chapter AlO. 1984. 59 pages. 

3-AI I . Measurement of discharge by moving-boat method, by G.F. Smoot and C.E. Novak: USGS — TWRI Book 3, 
Chapter All. 1969. 22 pages. 

3-Al 2. Fluorometric procedures for dye tracing. Revised, by J.F. Wilson, Jr., E.D. Cobb, and F.A. Kilpatrick: USGS— TWRI 
Book 3, Chapter A 12. 1986. 34 pages. 

3-A13. Computation of continuous records ofstreamflow. by E.J. Kennedy: USGS— TWRI Book 3, Chapter A13. 1983. 
53 pages. 



20 WATER RESOURCES DATA— CALIFORNIA, WATER YEAR 1997 

3-A14. Use of flumes in measuring discharge, by F.A. Kilpatrick and V.R. Schneider: USGS— TWRl Book 3. Chapter A14. 
1983. 46 pages. 

3-A15. Computation of water-surface profiles in open channels, by Jacob Davidian: USGS— TWRl Book 3, Chapter A 1 5. 1984. 
48 pages. 

3-A 16. Measurement of discharge using tracers, by F.A. Kilpatrick and E.D. Cobb: USGS— TWRl Book 3, Chapter A16. 1985. 
52 pages. 

3-A 1 7. Acoustic velocity meter systems, by Antonius Laenen: USGS— TWRl Book 3, Chapter A 1 7. 1 985. 38 pages. 

3-A 1 8. Determination of stream reaeration coefficients by use of tracers, by FA. Kilpatrick, R.E. Rathbun, Nobuhiro Yotsukura, 
G.W. Parker, and L.L. DeLong: USGS— TWRl Book 3, Chapter A 18. 1989. 52 pages. 

3-A19. Uvels at streamflow gaging stations, by E.J. Kennedy: USGS— TWRl Book 3, Chapter A19. 1990. 31 pages. 

3-A20. Simulation ofsoluable waste transport and buildup in surface waters using tracers, by F.A. Kilpatrick: USGS — TWRl 
Book 3, Chapter A20. 1993. 38 pages. 

3-A21. Stream-gaging cableways. by C. Russell Wagner: USGS— TWRl Book 3, Chapter A21. 1995. 56 pages. 

3-Bl. Aquifer-test design, obsenation. and data analysis, by R.W. Stallman: USGS— TWRl Book 3, Chapter Bl. 1971. 
26 pages. 

3-B2. Introduction to ground-water hydraulics, a programmed text for self-instruction, by G.D. Bennett: USGS — TWRl 
Book 3, Chapter B2. 1976. 172 pages. 

3-B3. Type curves for selected problems of flow to wells in confined aquifers, by J.E. Reed: USGS — TWRl Book 3, Chapter 
B3. 1980. 106 pages. 

3-B4. Regression modeling of ground-water flow, by R.L. Cooley and R.L. Naff: USGS— TWRl Book 3, Chapter B4. 1990. 
232 pages. 

3-B4. Supplement I. Regression modeling of ground-water flow — Modifications to the computer code for nonlinear regression 
solution of steady-state ground-water flow problems, by R.L. Cooley: USGS— TWRl Book 3, Chapter B4. 1993. 
8 pages. 

3-B5. Definition of boundary and initial conditions in the analysis of saturated ground-water flow systems — An introduction, 
by O.L. Franke, T.E. Reilly, and G.D. Bennett: USGS— TWRl Book 3, Chapter B5. 1987. 15 pages. 

3-B6. The principle of superposition and its application in ground-water hydraulics, by T.E. Reilly, O.L. Franke, and 
G.D. Bennett: USGS— TWRl Book 3, Chapter B6. 1987. 28 pages. 

3-B7. Analytical solutions for one-, nvo-. and three-dimensional solute transport in ground-water systems with uniform flow, 
by E.J. Wexler: USGS— TWRl Book 3, Chapter B7. 1992. 190 pages. 

3-Cl. Fluvial sediment concepts, by H.P. Guy: USGS— TWRl Book 3, ChapterCl. 1970. 55 pages. 

3-C2. Field methods for measurement of fluvial sediment, by H.P. Guy and V.W. Norman: USGS— TWRl Book 3, Chapter C2. 
1970. 59 pages. 

3-C3. Computation of fluvial-sediment discharge, by George Porterfield: USGS— TWRl Book 3, Chapter C3. 1972. 66 pages. 

4-Al. Some statistical tools in hydrology, by H.C. Riggs: USGS— TWRl Book 4, Chapter Al. 1968. 39 pages. 

4-A2. Frequency curves, by H.C. Riggs: USGS— TWRl Book 4, Chapter A2. 1968. 15 pages. 

4-Bl. Low-flow investigations, by H.C. Riggs: USGS— TWRl Book 4, Chapter Bl. 1972. 18 pages. 

4-B2. Storage analyses for water supply, by H.C. Riggs and C.H. Hardison: USGS— TWRl Book 4. Chapter B2. 1973. 
20 pages. 

4-B3. Regional analyses of streamflow characteristics, by H.C. Riggs: USGS— TWRl Book 4, Chapter B3. 1973. 15 pages. 

4-D 1 . Computation of rate and volume of stream depletion by welts, by C.T. Jenkins: USGS — TWRl Book 4, Chapter D 1 . 1 970. 
17 pages. 

5-Al. Methods for determination of inorganic substances in water and fluvial sediments, by M.J. Fishman and L.C. Friedman, 
editors: USGS— TWRl Book 5, Chapter Al. 1989. 545 pages. 

5-A2. Determination of minor elements in water by emission spectroscopy, by P.R. Bamett and E.C. Mallory, Jr.: USGS — 
TWRl Book 5, Chapter A2. 1971.31 pages. 

5-A3. Methods for the determination of organic substances in water and fluvial sediments, edited by R.L. Wershaw, 
M.J. Fishman, R.R. Grabbe, and L.E. Lowe: USGS— TWRl Book 5, Chapter A3. 1987. 80 pages. 

5-A4. Methods for collection and analysis of aquatic biological and microbiological samples, by L.J. Britton and P.E. Greeson, 
editors: USGS— TWRl Book 5, Chapter A4. 1989. 363 pages. 



WATER RESOURCES DATA— CALIFORNIA, WATER YEAR 1997 21 

5-A5. Methods for determination of radioactive substances in water and fluvial sediments, by L.L. Thatcher, V.J. Janzer, and 
K.W, Edwards: USGS— TWRl Book 5, Chapter A5. 1977. 95 pages. 

5-A6. Qiiality assurance practices for the chemical and biological analyses of water and fluvial sediments, by L.C. Friedman 
and D.E. Erdmann: USGS— TWRI Book 5, Chapter A6. 1982. 181 pages. 

5-Cl . Laboratory theory and methods for sediment analysis, by H.P. Guy: USGS — TWRl Book 5, Chapter C 1 . 1 969. 58 pages. 

6-Al. A modular three-dimensional finite-difference ground-water fiow model, by M.G. McDonald and A.W. Harbaugh: 
USGS— TWRl Book 6, Chapter Al. 1988. 586 pages. 

6-A2. Documentation of a computer program to simulate aquifer-system compaction using the modular finite-difference 
ground-water fiow model, by S.A. Leake and D.E. Prudic: USGS— TWRI Book 6. Chapter A2. 1991 . 68 pages. 

6-A3. A modular finite-element model (MODFE)for areal and axisymmetric ground-water-flow problems. Part I: Model 
Description and User's Manual, by L.J. Torak: USGS— TWRI Book 6 Chapter A3. 1993. 136 pages. 

6-A4. A modular finite-element model (MODFE)for areal and axisymmetric ground-water-fiow problems. Part 2: Derivation 
of finite-element equations and comparisons with analytical solutions, by R.L. Cooley: USGS — TWRI Book 6, 
Chapter A4. 1992. 108 pages. 

6-A5. A modular finite-element model (MODFE)for areal and axisymmetric groimd-water-flow problems. Part 3: Design 
philosophy and programming details, by L.J. Torak: USGS— TWRI Book 6, Chapter A5. 1993. 243 pages. 

6- A6. A coupled surface-water and ground-water flow model (MODBRANCH)for simulation of stream-aquifer interaction, by 
Eric D. Swain and Eliezer J. Wexler. 1995. 125 pages. 

7-Cl . Finite difference model for aquifer simulation in two dimensions with results of numerical experiments, by P.C. Trescott, 
G.F. Finder, and S.P. Larson: USGS— TWRI Book 7, Chapter CI. 1976. 116 pages. 

7-C2. Computer model of two-dimensional solute transport and dispersion in ground water, by L.F. Konikow and 

J.D. Bredehoeft: USGS— TWRl Book 7, Chapter C2. 1978. 90 pages. 
7-C3. A model for simulation of flow in singular and interconnected channels, by R.W. Schaffranek, R. A. Baltzer, and 

D.E. Goldberg: USGS— TWRI Book 7, Chapter C3. 1981. 110 pages. 
8-Al. Methods of measuring water levels in deep wells, by M.S. Garber and F.C. Koopman: USGS — TWRI Book 8, Chapter 

Al. 1968. 23 pages. 
8-A2. Installation and service manual for U.S. Geological Survey manometers, by J.D. Craig: USGS — TWRI Book 8, Chapter 

A2. 1983. 57 pages. 
8-B2. Calibration and maintenance of vertical-axis type current meters, by G.F. Smoot and C.E. Novak: USGS — TWRI 

Book 8, Chapter B2. 1968. 15 pages. 
9-A7. National Field Manual for the Collection of Water-Quality Data: Biological Indicators, by D.N. Myers and F.D. Wilde: 

USGS--TWRI Book 9, Chapter A7. 1997. 49 pages. 



WATER RESOURCES DATA— CALIFORNIA, WATER YEAR 1997 



23 




f-<?^'" O 






10 KILOMETER 



EXPLANATION 
A GAGING STATION 
* RESERVOIR SITE AND CONTENTS 



Figure 2. Location of discharge stations in Alpine County. 
(NOTE: Records for stations 10308200 tlirough 10310000 and 1 1293350 through 1 1313485 published in volume 3.) 



24 



WATER RESOURCES DATA— CALIFORNIA, WATER YEAR 1997 



EXPLANATION 

GAGING STATION 
POWERPLANT 



RESERVOIR SITE AND CONTENTS 



^f>rSC^-^- 



^^ooB^oo^^ 




6100 



Sail Spriin;s Resenoir 

-11314000 




10 KILOMETERS 



Figure 3. Location of discharge stations in Amador County. 
(NOTE: Records for stations 11313510 through 1 1316700 published in volume 3.) 



WATER RESOURCES DATA— CALIFORNIA, WATER YEAR 1997 



25 



EXPLANATION 
A GAGING STATION 
a POWERPLANT 
■* RESERVOIR SITE AND CONTENTS 




10 MILES 

-1 ' 

10 KILOMETERS 



SUTTER 



COUNTY 



Figure 4. Location of discharge stations In Butte County. 



26 



WATER RESOURCES DATA— CALIFORNIA, WATER YEAR 1997 



i 



EXPLANATION 

GAGING AND WATER-QUALITY (TEMPERATURE) 
STATION 

GAGING AND WATER-QUALITY (CHEMICAL AND 
TEMPERATURE) STATION 

RESERVOIR SITE AND CONTENTS 



GLENN 



COUNTY 



Princeton 




10 MILES 
5 10 KILOMETERS 

Figure 5. Location of discharge and water-quality stations in Colusa County. 



WATER RESOURCES DATA— CALIFORNIA, WATER YEAR 1997 



27 



11429500- 
11429350- 
11429340- 



^G^'^ 




775 
36770 
66092 
.00 

^10336580 



10 MILES 



10 KILOMETERS 



^Oq^— countv 




EXPLANATION 
▲ GAGING STATION 

A- GAGING AND WATER-QUALITY (SEDIMENT, 
CHEMICAL ) STATION 

-- WATER-QUALITY (CHEMICAL, SEDIMENT) 
STATION 

■ POWERPLANT 

•* RESERVOIR SITE AND CONTENTS 



Figure 6. Location of discharge and water-quality stations in El Dorado County. 
(NOTE; Records for stations 10336608 tfirough 10336790 and 1 1333000 published in volume 3.) 



28 



WATER RESOURCES DATA— CALIFORNIA, WATER YEAR 1997 



TEHAMA 



COUNTY 




10 MILES 



10 KILOMETERS 



EXPLANATION 
A GAGING STATION 
* RESERVOIR SITE AND CONTENTS 



Figure 7. Location of discharge stations in Glenn County. 



WATER RESOURCES DATA— CALIFORNIA, WATER YEAR 1997 



29 



A GAGING STATION 

^ GAGING STATIONS WITH TELEMETRY 







Figure 8. Location of discharge stations in Lal<e County. 
(NOTE: Records for stations 1 1470000 and 1 1470500 published in volume 2.) 



30 



WATER RESOURCES DATA— CALIFORNIA, WATER YEAR 1997 



MODOC 



COUNTY 



11351 




EXPLANATION 
A GAGING STATION 
■ POWERPLANT 

* RESERVOIR SITE AND CONTENTS 



Figure 9. Location of discharge stations in Lassen County. 



WATER RESOURCES DATA— CALIFORNIA, WATER YEAR 1997 



31 



OREGON 



Z 
O I 



I 
I 

o 

(0 I 
CO I 



Newell 




LASSEN 



10 MILES 



COUNTY 



10 KILOMETERS 



EXPLANATION 
A GAGING STATION 




Figure 10. Location of discharge stations in Modoc County. 



32 



WATER RESOURCES DATA— CALIFORNIA, WATER YEAR 1997 




COUNTY 



EXPLANATION 
^ GAGING STATION WITH TELEMETRY 
* RESERVOIR SITE AND CONTENTS 



-^ 



Figure 11. Location of discharge stations in Napa County. 
(NOTE: Records tor stations 1 1456000 and 1 1458000 published in volume 2.) 



WATER RESOURCES DATA— CALIFORNIA, WATER YEAR 1997 



33 




11414465 
11414450 
11414440 
11414410 
11414700 



11414690 o. CODA _r 10344400 

Mr* °^" SIERRA COUNTS 10346000 

TT^S. '^^ ~F7~~.'ZT -A- \ 



11ft,i4400 

riiyce Luk, 

'1414090 



41410a 



11414154 
11414155 
11414210 



0343500^344490j i J 

— '^t - - 

10338100 ^\ 1-10338^ 
10338400 -* "-10338500 



%3 



10340300^ f> 
10340500"^ 10344500^ 



570^ 
Q 



rTiTcke'e J 03394 Id 

4do 



0339 

0338700 
0338500 



> 



i 



10 MILES 



-T — I 

5 10 KILOMETERS 



EXPLANATION 

GAGING STATION 

GAGING AND WATER-QUALITY (SEDIMENT, 
CHEMICAL ) STATION 

GAGING AND WATER-QUALITY 
(TEMPERATURE) STATION 

GAGING AND WATER-QUALITY (CHEMICAL, 
TEMPERATURE) STATION 

POWERPLANT 

RESERVOIR SITE AND CONTENTS 



Figure 12. Location of discharge and water-quality stations in Nevada County. 
(NOTE: Records for stations 10338400 through 10346000 published in volume 3.) 



34 



WATER RESOURCES DATA— CALIFORNIA, WATER YEAR 1997 




^^CRAMENfo ~r 



CO 



11433080 
11433085 
11433060 
11433065 

EXPLANATION 

GAGING STATION 

GAGING AND WATER-QUALITY (SEDIMENT, 
CHEMICAL) STATION 

POWERPLANT 

RESERVOIR SITE AND CONTENTS 



10 MILES 



5 10 KILOMETERS 



Figure 13. Location of discharge and water-quality stations in Placer County. 
(NOTE; Records for stations 10336660 through 10338000 published in volume 3.) 



WATER RESOURCES DATA— CALIFORNIA, WATER YEAR 1997 



35 



SHASTA CO LASSEN CO 
t \^ 

I 




11 3951 so- 
il 395200 



, .13250 

^ J1413300 

0° EXPLANATION 

A GAGING STATION 



T ^T- 

5 10 KILOMETERS 



■ POWERPLANT 

■^ RESERVOIR SITE AND CONTENTS 



Figure 14. Location of discharge stations in Plumas County. 



36 



WATER RESOURCES DATA— CALIFORNIA, WATER YEAR 1997 



SUTTER 
CO 



PLACER 



COUNTY 



Fdl^om Lake 




EXPLANATION 

GAGING STATION 

A. GAGING AND WATER-QUALITY (SEDIMENT, 
"^ CHEMICAL, TEMPERATURE AND 
CONDUCTIVITY) STATION 

M. WATER-QUALITY (SEDIMENT, 
CHEMICAL) STATION 

RESERVOIR SITE AND CONTENTS 



10 MILES 



T 

10 KILOMETERS 



Figure 15. Location of discharge and water-quality stations in Sacramento County. 
(NOTE: Records for stations 1 1335000 and 1 1336585 publishied in volume 3.) 



WATER RESOURCES DATA— CALIFORNIA, WATER YEAR 1997 



37 



SISKIYOU 

;^"1- Cr 



11367740 



COUNTY 



1135^010 
1^11358020 




10 MILES 



I ' I 
5 10 KILOMETERS 



EXPLANATION 
A GAGING STATION 
4 GAGING STATION (PARTIAL RECORD) 
-* RESERVOIR SITE AND CONTENTS 
■ POWERPLANT 



Figure 16. Location of discharge stations in Shasta County. 



38 



WATER RESOURCES DATA— CALIFORNIA, WATER YEAR 1997 



EXPLANATION 

▲ GAGING STATION 

■± RESERVOIR SITE AND CONTENTS 




Figure 17. Location of discharge stations in Sierra County. 
(NOTE: Records for stations 10341950 tfirough 10344300 published in volume 3.) 



WATER RESOURCES DATA— CALIFORNIA, WATER YEAR 1997 



39 



OREGON 



11511400 




EXPLANATION 
▲ GAGING STATION 
* RESERVOIR SITE AND CONTENTS 



Figure 18. Location of discharge stations in Siskiyou County. 
(NOTE: Records for stations 11 51 1400 through 1 1522500 published in volume 2.) 



40 



WATER RESOURCES DATA— CALIFORNIA, WATER YEAR 1997 




10 KILOMETERS 



Figure 19. Location of discharge station in Solano County. 



WATER RESOURCES DATA— CALIFORNIA, WATER YEAR 1997 
BUTTE COUNTY 



41 




EXPLANATION 



▲. GAGING AND WATER-QUALITY (TEMPERATURE, 
^ SEDIMENT, AND CONDUCTIVITY) STATION 

-- WATER-QUALITY (SEDIMENT, CHEMICAL) 
STATION 



SACRAMENTO 
COUNTY 



Figure 20. Location of discharge and water-quality stations in Sutter County. 



42 



WATER RESOURCES DATA— CALIFORNIA, WATER YEAR 1997 



11 3761 so- 
il 376460- 




EXPLANATION 
A GAGING STATION 

■ POWERPLANT 

A- GAGING AND WATER-QUALITY 
(CHEMICAL, SEDIMENT) 
STATION 



Figure 21. Location of discharge and water-quality stations in Tehama County. 



WATER RESOURCES DATA-CALIFORNIA, WATER YEAR 1997 



43 



_COLUSA_ _ COUNTY 





Knights Landing V-^ >5l' 
11390890\ ^ 






Y © 



' — I 




7 



11453000\ \ 



-^%. 




V 11454000 *i"'f^/ 



csiSL. 






Davis 

COUNTY 



West Sacramento 

11453120 



/ 

\ 

) 




EXPLANATION 

A GAGING STATION 

■r WATER-QUALITY (TEMPERATURE, 
SEDIMENT, AND CONDUCTIVITY) 
STATION 

;r WATER-QUALITY (CHEMICAL, 
SEDIMENT) STATION 



10 MILES 



10 KILOMETERS 



Figure 22. Location of discharge and water-quality stations in Yolo County. 



44 



WATER RESOURCES DATA— CALIFORNIA, WATER YEAR 1997 



Camplinville 

11409300 
09350 




EXPLANATION 
GAGING STATION 

GAGING AND WATER-QUALITY 
(TEMPERATURE) STATION 

WATER-QUALITY (SEDIMENT, 
CHEMICAL) STATION 

POWERPLANT 

RESERVOIR SITE AND CONTENTS 



Camp Farn West 
Resenvir 



10 KILOMETERS 



Figure 23. Location of discharge and water-quality stations in Yuba County. 



WATER RESOURCES DATA— CALIFORNIA, WATER YEAR 1 997 45 

SURFACE-WATER-DISCHARGE AND SURFACE-WATER-QUALITY RECORDS 

Remark Codes 
The following remark codes may appear with the water-quality data in this report: 

PRINTED OUTPUT REMARK 

e Estimated value. 

> Actual value is known to be greater than the value shown. 

< Actual value is known to be less than the value shown. 

K Results based on colony count outside the acceptable range (non-ideal colony count). 

L Biological organism count less than 0.5 percent (organism may be observed rather 

than counted). 
D Biological organism count equal to or greater than 1 5 percent (dominant). 

ND Not detected. 

& Biological organism estimated as dominant. 

* Instantaneous streamflow at the time of cross-sectional measurements. 

Partial sampled width. 

Laboratory value. 

Laboratory fixed-end point titration. 
A Samples collected by another agency. 

N Suspended-sediment concentration value determined from a sample collected and 

processed according to National Water-Quality Assessment (NAWQA) protocol. 
V Analyte was detected in both the environmental sample and the associated blanks. 

Dissolved Trace-Element Concentrations 

NOTE: Traditionally, dissolved trace-element concentrations have been reported at the microgram per liter (ng/L) level. Recent 
evidence, mostly from large rivers, indicates that actual dissolved-phase concentrations for a number of trace 
elements are within the range of lO's to lOO's of nanograms per liter (ng/L). Data above the |a.g/L level should be 
viewed with caution. Such data may actually represent elevated environmental concentrations from natural or human 
causes; however, these data could reflect contamination introduced during sampling, processing, or analysis. To 
confidently produce dissolved trace-element data with insignificant contamination, the U.S. Geological Survey began 
using new trace-element protocols at some stations in water year 1994. 

Change in National Trends Network procedures 

NOTE: Sample handling procedures at all National Trends Network stations were changed substantially on January 1 1 , 1994, in 
order to reduce contamination from the sample shipping container. The data for samples before and after that date are 
different and not directly comparable. A tabular summary of the differences based on a special intercomparison study, 
is available from the NADP/NTN Coordination Office, Colorado State University, Fort Collins, CO 80523 
(Telephone: 303-491-5643). 



1 

2 



PACIFIC SLOPE BASINS IN CALIFORNIA 
SACRAMENTO RIVER BASIN 



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SACRAMENTO RIVER BASIN 
1 1342000 SACRAMENTO RIVER AT DELTA, CA 



49 



LOCATION.--Lat 40°56'23", long 1 22°24' 58", in SW 1/4 NW 1/4 sec.35, T.36 N., R.5 W. Shasta County, Hydrologic Unit 1 8020005. U.S. Bureau 
of Reclamation property, on left bank 0.2 mi downstream from Dog Creek, 0.6 mi southeast of Delta, 2.8 mi south of Lamoine, and 29 mi 
downstream from Lake Siskiyou. 

DRAINAGE AREA.--425 mi^. 

PERIOD OF RECORD.-October 1944 to current year. Monthly discharge only for some periods, published in WSP 1315-A. 
CHEMICAL DATA: Water years 1951-81. 
WATER TEMPERATURE: Water years 1951, 1954-57, 1963-79. 

REVISED RECORDS.-WSP 1395: 1951{M). WDR-CA-94-4: 1993(P). 

GAGE.-Water-stage recorder. Datum of gage is 1 ,075.00 ft above sea level (levels by U.S. Bureau of Reclamation). 

REMARKS. -Records excellent. Some regulation by Lake Siskiyou, capacity, 26,100 acre-ft, since December 1968. Some minor diversions for 
irrigation upstream from station. See schematic diagram of Pit and McCloud River basins. 

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 69,800 ft^/s, Jan. 16, 1974, gage height, 27.20 ft in gage well, 28.7 ft from 
floodmarks, from rating curve extended above 19,000 ft^/s on basis of slope-area measurements at gage height 19.50 ft, and of peak flow; 
minimum daUy, 117 ft^/s, Aug. 5, 6, 12-15, 1977. 

EXTREMES FOR CURRENT YEAR.-Peak discharges greater than base discharge of 8,000 ft^/s, or maximum: 

Discharge Gage height Discharge Gage height 

Date Time (ft^/s) (ft) Date Time (ft'/s) (ft) 



Dec. 10 
Jan. 1 



0445 
0030 



30,300 
62,300 



16.30 
25.21 



Jan. 26 



1145 



9,450 



10.80 



DAY 



OCT 



DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 

NOV DEC JAN FEB MAR APR MAY JUN JUL 



1 


247 


285 


534 


45700 


3020 


808 


800 


790 


378 


e390 


225 


250 


2 


245 


276 


480 


19900 


2630 


1050 


760 


751 


372 


327 


223 


248 


3 


244 


272 


466 


10200 


2340 


883 


733 


721 


547 


308 


220 


246 


4 


244 


271 


541 


6630 


2140 


825 


719 


707 


956 


287 


218 


244 


5 


244 


266 


908 


4990 


1940 


774 


703 


685 


538 


278 


217 


241 


6 


242 


263 


752 


3940 


1780 


746 


685 


674 


459 


273 


215 


241 


7 


239 


262 


2610 


3340 


1670 


726 


664 


654 


426 


269 


222 


242 


8 


236 


261 


11500 


2910 


1570 


700 


650 


643 


401 


266 


225 


239 


9 


236 


259 


23300 


2630 


1490 


679 


642 


636 


397 


263 


227 


240 


10 


236 


259 


21800 


2430 


1440 


665 


622 


640 


388 


263 


229 


245 


11 


237 


259 


8590 


2230 


1360 


664 


611 


638 


427 


259 


230 


241 


12 


241 


259 


5710 


2120 


1280 


656 


603 


618 


382 


258 


231 


232 


13 


244 


263 


4400 


1910 


1210 


643 


601 


665 


386 


256 


231 


230 


14 


241 


260 


3140 


1570 


1160 


636 


603 


565 


383 


253 


229 


297 


15 


240 


259 


2480 


1450 


1120 


644 


602 


580 


349 


251 


225 


314 


16 


238 


260 


2070 


1410 


1100 


749 


624 


554 


336 


249 


227 


283 


17 


239 


317 


1790 


1360 


1130 


905 


656 


531 


323 


247 


226 


278 


18 


255 


1130 


1570 


1290 


1070 


865 


867 


517 


325 


246 


224 


284 


19 


259 


4470 


1420 


1230 


1060 


930 


1510 


494 


316 


243 


223 


270 


20 


252 


2570 


1320 


1200 


1020 


927 


1900 


471 


302 


241 


357 


254 


21 


249 


1810 


1260 


1350 


985 


980 


1740 


454 


297 


239 


298 


264 


22 


250 


1990 


1250 


1330 


977 


919 


1550 


435 


296 


237 


255 


260 


23 


256 


1380 


1200 


1210 


912 


1040 


1640 


458 


293 


235 


249 


242 


24 


276 


1030 


1170 


1170 


883 


967 


1420 


492 


289 


230 


266 


236 


25 


277 


872 


1350 


1650 


869 


1050 


1150 


445 


285 


233 


253 


235 


26 


266 


739 


1360 


7250 


850 


1020 


1050 


419 


280 


232 


251 


232 


27 


256 


651 


2210 


5930 


857 


1040 


1020 


414 


278 


230 


256 


230 


28 


254 


605 


4080 


5940 


848 


978 


972 


409 


277 


228 


253 


228 


29 


464 


561 


14200 


4820 





904 


918 


411 


280 


229 


248 


226 


30 


384 


513 


19300 


3750 





874 


848 


398 


e360 


234 


250 


224 


31 


304 





36100 


3210 





849 





385 





228 


254 





TOTAL 


8095 


22872 


178861 


156050 


38711 


26096 


27863 


17254 


11326 


7982 


7458 


7496 


MEAN 


261 


762 


5770 


5034 


1383 


842 


929 


557 


378 


257 


241 


250 


MAX 


464 


4470 


36100 


45700 


3020 


1050 


1900 


790 


956 


390 


357 


314 


MIN 


236 


259 


466 


1170 


848 


636 


601 


385 


277 


228 


215 


224 


AC -FT 


16060 


45370 


354800 


309500 


76780 


51760 


55270 


34220 


22470 


15830 


14790 


14870 


e Estimated. 

























50 



SACRAMENTO RIVER BASIN 
11342000 SACRAMENTO RIVER AT DELTA, CA— Continued 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1945 - 1997, BY WATER YEAR (WY) 



NOV 



DEC 



JUN 



JUL 



AUG 



SEP 



MEAN 


358 


781 


1368 


1840 


2212 


2210 


1979 


1648 


771 


328 


232 


231 


MAX 


1837 


6075 


5770 


7162 


9557 


7957 


4264 


4216 


3090 


1142 


462 


514 


(WY) 


1951 


1974 


1997 


1995 


1958 


1983 


1963 


1983 


1983 


1983 


1983 


1957 


MIN 


150 


187 


197 


214 


226 


243 


264 


410 


229 


145 


122 


154 


(WY) 


1945 


1992 


1977 


1991 


1977 


1977 


1977 


1977 


1977 


1977 


1977 


1991 



SUMMARY STATISTICS 

ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC-FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1945 - 1997 



589977 






510064 










1612 






1397 






1158 

2715 

228 


1983 

1977 


36100 


Dec 


31 


45700 


Jan 


1 


53900 


Jan 16 1974 


229 


Sep 


5 


215 


Aug 


6 


117 


Aug 5 1977 


238 


Oct 


6 


220 


Aug 


1 


117 


Aug 11 1977 








62300 


Jan 


1 


69800 


Jan 16 1974 








25.21 


Jan 


1 


27.20 


Jan 16 1974 


1170000 






1012000 






838700 




3070 






2170 






2580 




732 






513 






520 




250 






236 






198 





SACRAMENTO RIVER BASIN 
1 1345500 SOUTH FORK PIT RIVER NEAR LIKELY. CA 



51 



LOCATION.--Lat 41°13'51", long 120°26' 10", in NE 1/4 SE 1/4 seel 1, T.39 N., R.13 E., Modoc County, Hydrologic Unit 18020002, on left bank 
250 ft downstream from highway bridge, 1.4 mi downstream from West Valley Creek, and 3.5 mi east of Likely. 

DRAINAGE AREA.--247 mil 

PERIOD OF RECORD.-October 1928 to current year. Monthly discharge only for some periods, published in WSP 1315-A. 
CHEMICAL DATA: Water years 1951-79. 
WATER TEMPERATURE: Water years 1965-79. 
SEDIMENT DATA: Water years 1957-61, 1967-70. 

REVISED RECORDS.-WSP 1931: Drainage area, 1932(M), 1938(M), 1952(M). WDR CA-88-4: I983(M). 

GAGE. -Water-stage recorder. Datum of gage is 4,507.74 ft above sea level. Prior to Oct. 1, 1931, at site 1,000 ft downstream at different datum. 

REMARKS— Records fair. Considerable regulation by West Valley Reservoir on West Valley Creek beginning in May 1937, usable capacity, 
21 ,700 acre-ft. Diversions for irrigation of about 3,800 acres upstream from station. See schematic diagram of Pit and McCloud River basins. 

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 1 ,620 ft^/s, June 2, 1971, gage height, 6.05 ft; minimum, 0.2 ft^/s, Feb. 3, 1941. 



OCT 



DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 

NOV DEC JAN FEB MAR APR MAY JtJN JOL 



1 


48 


58 


33 


164 


85 


23 


80 


308 


145 


167 


180 


98 


2 


48 


46 


26 


273 


58 


23 


70 


287 


138 


193 


161 


130 


3 


48 


34 


24 


e330 


44 


22 


70 


273 


131 


208 


151 


153 


4 


48 


19 


21 


197 


41 


23 


71 


262 


146 


206 


151 


149 


5 


49 


18 


55 


147 


38 


23 


67 


256 


153 


175 


164 


144 


6 


50 


16 


37 


121 


30 


25 


66 


253 


138 


154 


169 


143 


7 


51 


17 


33 


102 


33 


23 


63 


251 


128 


151 


179 


142 


8 


50 


16 


57 


90 


34 


22 


60 


252 


129 


170 


195 


120 


9 


48 


17 


40 


81 


31 


20 


69 


255 


142 


176 


194 


103 


10 


49 


17 


44 


73 


38 


20 


91 


255 


151 


176 


207 


93 


11 


51 


18 


46 


67 


40 


22 


84 


261 


143 


173 


212 


86 


12 


58 


18 


49 


63 


36 


21 


82 


270 


164 


170 


210 


85 


13 


58 


20 


36 


64 


29 


20 


83 


273 


160 


168 


208 


80 


14 


60 


21 


26 


132 


29 


20 


94 


270 


148 


181 


210 


81 


15 


64 


21 


37 


179 


27 


23 


106 


262 


135 


188 


207 


75 


16 


61 


21 


32 


125 


27 


31 


123 


253 


125 


188 


204 


69 


17 


61 


24 


23 


72 


28 


32 


136 


243 


118 


188 


196 


66 


18 


62 


44 


27 


48 


26 


28 


155 


233 


110 


188 


200 


62 


19 


66 


48 


30 


42 


26 


30 


184 


225 


95 


176 


193 


49 


20 


64 


41 


24 


38 


24 


33 


208 


215 


91 


164 


191 


49 


21 


63 


33 


21 


36 


23 


48 


250 


200 


85 


162 


172 


51 


22 


68 


53 


21 


37 


23 


53 


288 


191 


82 


172 


160 


49 


23 


73 


50 


19 


29 


22 


60 


319 


194 


82 


183 


161 


53 


24 


93 


36 


19 


25 


20 


72 


334 


205 


84 


180 


163 


52 


25 


96 


35 


19 


31 


21 


72 


321 


199 


77 


184 


146 


48 


26 


84 


27 


53 


62 


23 


81 


310 


179 


73 


182 


138 


49 


27 


81 


24 


71 


88 


23 


97 


310 


166 


71 


184 


117 


49 


28 


80 


27 


65 


105 


24 


98 


320 


157 


77 


185 


100 


SO 


29 


78 


25 


70 


92 





91 


328 


156 


107 


191 


97 


51 


30 


75 


24 


62 


71 





87 


320 


149 


124 


188 


97 


56 


31 


80 





95 


68 





87 





144 





186 


97 





TOTAL 


1965 


868 


1215 


3052 


903 


1330 


5062 


7097 


3552 


5557 


5230 


2485 


MEAN 


63.4 


28.9 


39.2 


98.5 


32.3 


42.9 


169 


229 


118 


179 


169 


82.8 


MAX 


96 


58 


95 


330 


85 


98 


334 


308 


164 


208 


212 


153 


MIN 


48 


16 


19 


25 


20 


20 


60 


144 


71 


151 


97 


48 


AC -FT 


3900 


1720 


2410 


6050 


1790 


2640 


10040 


14080 


7050 


11020 


10370 


4930 


e Estimated. 

























52 



SACRAMENTO RIVER BASIN 
1 1345500 SOUTH FORK PIT RTVER NEAR LIKELY. CA— Continued 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1929 - 1997, BY WATER YEAR (WY) 

OCT NOV DEC JAN FEB MAR APR MAY JUN 



SEP 



MEAN 


31.6 


28.1 


28.8 


31.2 


35.5 


48.9 


110 


231 


173 


90.4 


115 


56.8 


MAX 


63.4 


57.8 


107 


98.5 


101 


219 


385 


570 


610 


238 


236 


159 


(WY) 


1997 


1985 


1965 


1997 


1965 


1972 


1952 


1984 


1971 


1995 


1995 


1975 


HIN 


15.7 


5.17 


3.28 


5.99 


4.07 


4.63 


16.9 


25.7 


12.1 


7.70 


9.97 


10.5 


(WY) 


1932 


1980 


1980 


1941 


1978 


1977 


1991 


1931 


1931 


1931 


1934 


1931 



SUMMARY STATISTICS 

ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC -FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



FOR 199 6 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1929 - 1997 



51704 






38316 










141 






105 




82.0 
183 
27.3 




1984 
1931 


584 


May 


19 


334 


Apr 24 


1220 


Jun 


2 1971 


16 


Nov 


6 


16 


Nov 6 


.80 


Mar 


19 1940 


17 


Nov 


5 


17 


Nov 5 


1.1 


Feb 


3 1941 








426 


Jan 3 


1620 


Jxjn 


2 1971 








4.08 


Jan 3 


6.05 


Jun 


2 1971 


02600 






76000 




59390 






307 






208 




188 






102 






80 




43 






34 






23 




12 







SACRAMENTO RIVER BASIN 
1 1 348500 PIT RIVER NEAR CANBY, CA 



53 



LOCATION.--Lat 41''24'22", long 120°55'36", in NW 1/4 SW 1/4 sec.lO, T.41 N., R.9 E., Modoc County. Hydrologic Unit 18020002, on right 
bank at lower end of Warm Spring Valley, 3.9 mi southwest of Canby. 

DRAINAGE AREA. --1,431 mi^, excluding Goose Lake basin. 

PERIOD OF RECORD.-January 1904 to December 1905, May 1929 to current year (1929-31 incomplete). 
CHEMICAL DATA: Water years 1951-79. 
WATER TEMPERATURE: Water years 1965-79. 
SEDIMENT DATA: Water years 1957-61, 1967-70. 

REVISED RECORDS.-WSP 1445: 1904, 1935(M), 1936, 1937(M). WSP 1931: Drainage area. 

GAGE.-Water-stage recorder. Datum of gage is 4,266.0 ft above sea level. January 1904 to December 1905, nonrecording gage and May 6, 1929, 
to Sept. 30, 1931, water-stage recorder, at site 100 ft upstream at different datum. 

REMARKS. -Records good. Low flow regulated by many small reservoirs, total capacity about 144,000 acre-ft. Diversions for irrigation of about 
39,000 acres upstream from station. See schematic diagram of Pit and McCIoud River basins. 

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge observed, 13,000 ft^/s. Mar. 8, 1904, gage height, 15.0 ft, site and datum then in 
use; minimum daily, 0.1 ft'/s, several days in April 1934 and August 1935. 

EXTREMES FOR CURRENT YEAR.-Peak discharges greater than base discharge of 800 ft^/s, or maximum: 

Discharge Gage height Discharge Gage height 



Date 


Time 


(ft3/s) 


(ft) 


Date 


Time 


(ft^/s) 


(ft) 


Dec. 13 


0530 


946 


4.70 


Feb. 1 


2330 


2,690 


7.33 


Jan. 2 


2330 


7,280 


11.82 


Apr. 24 


2400 


899 


4.71 



DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 

NOV DEC JAN FEB MAR APR MAY JtlN JUL 



AUG 



SEP 



1 


41 


153 


125 


4490 


2500 


302 


436 


677 


163 


41 


101 


72 


2 


50 


152 


127 


6650 


2630 


311 


404 


612 


126 


41 


110 


65 


3 


64 


146 


130 


6620 


2100 


332 


371 


553 


134 


31 


135 


83 


4 


69 


148 


124 


5350 


1380 


334 


349 


519 


147 


23 


110 


118 


5 


64 


136 


128 


4080 


952 


308 


311 


476 


152 


19 


91 


90 


6 


62 


110 


153 


3070 


747 


320 


257 


411 


179 


17 


97 


66 


7 


73 


97 


204 


2270 


629 


374 


262 


346 


158 


16 


82 


52 


8 


53 


90 


203 


1640 


581 


401 


277 


384 


136 


17 


63 


52 


9 


59 


92 


241 


1030 


551 


370 


286 


374 


109 


24 


48 


45 


10 


61 


87 


397 


738 


553 


328 


290 


310 


97 


21 


37 


46 


11 


55 


90 


507 


638 


573 


314 


276 


333 


133 


19 


29 


58 


12 


66 


82 


789 


553 


549 


315 


280 


304 


234 


18 


18 


60 


13 


67 


72 


880 


337 


476 


300 


253 


209 


333 


19 


21 


54 


14 


58 


68 


580 


299 


418 


285 


237 


97 


391 


27 


36 


57 


15 


67 


71 


365 


373 


394 


269 


240 


214 


421 


52 


47 


80 


16 


72 


84 


254 


330 


376 


288 


225 


247 


383 


123 


74 


105 


17 


76 


95 


222 


363 


393 


364 


221 


250 


310 


100 


101 


130 


18 


76 


111 


178 


393 


396 


386 


203 


263 


241 


85 


82 


125 


19 


83 


150 


161 


393 


360 


357 


261 


229 


181 


66 


78 


127 


20 


81 


212 


144 


362 


354 


342 


377 


191 


155 


99 


90 


112 


21 


84 


195 


143 


341 


348 


359 


514 


160 


110 


112 


104 


77 


22 


86 


182 


138 


306 


331 


423 


685 


129 


89 


120 


94 


58 


23 


94 


176 


130 


265 


313 


479 


810 


155 


64 


79 


99 


53 


24 


94 


182 


133 


244 


288 


486 


879 


187 


42 


45 


101 


57 


25 


112 


173 


131 


311 


266 


481 


884 


236 


49 


23 


80 


58 


26 


226 


158 


181 


446 


271 


468 


795 


329 


40 


22 


45 


55 


27 


232 


149 


520 


724 


289 


474 


693 


298 


45 


18 


37 


53 


28 


190 


135 


836 


1260 


306 


488 


654 


287 


43 


14 


79 


49 


29 


172 


127 


1000 


1870 





475 


680 


289 


39 


13 


73 


42 


30 


153 


139 


1280 


2320 





428 


705 


233 


39 


16 


67 


32 


31 


149 





2480 


2310 


--- 


433 





203 





45 


73 





TOTAL 


2889 


3862 


12884 


50376 


19324 


11594 


13115 


9505 


4743 


1365 


2302 


2131 


MEAN 


93.2 


129 


416 


1625 


690 


374 


437 


307 


158 


44.0 


74.3 


71.0 


MAX 


232 


212 


2480 


6650 


2630 


488 


884 


677 


421 


123 


135 


130 


MIN 


41 


68 


124 


244 


266 


269 


203 


97 


39 


13 


18 


32 


AC -FT 


5730 


7660 


25560 


99920 


38330 


23000 


26010 


18850 


9410 


2710 


4570 


4230 



54 



SACRAMENTO RIVER BASIN 
1 1348500 PIT RIVER NEAR CANBY. CA— Continued 



STATISTICS OP MONTHLY MEAN DATA FOR WATER YEARS 1904 - 1997, BY WATER YEAR (WY) 



OCT 



DEC 



JAN 



FEB 



JUN 



JUL 



AUG 



SEP 



MEAN 


77.7 


103 


193 


315 


432 


552 


474 


454 


264 


65.8 


43.6 


63.2 


MAX 


1068 


418 


1225 


1684 


2249 


1749 


2774 


2176 


1746 


312 


125 


151 


(WY) 


1963 


1982 


1938 


1970 


1986 


1972 


1952 


1995 


1971 


1971 


1983 


1984 


MIN 


.26 


12.7 


31.0 


14.7 


19.2 


5.83 


1.29 


2.32 


3.53 


4.62 


.22 


.28 


<WY) 


1935 


1935 


1937 


1937 


1937 


1934 


1934 


1992 


1992 


1931 


1934 


1934 



SUMMARY STATISTICS 

ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAX FLOW 
INSTANTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC -FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1904 - 1997 



173204 






134090 










473 






367 






251 
,676 
22.4 


1971 
1934 


3800 


Feb 


21 


6650 


Jan 


2 


8580 


Feb 19 1986 


27 


Jul 


9 


13 


Jul 


29 


.10 


Apr 18 1934 


47 


Sep 


8 


19 


Jul 


6 


.13 


Apr 17 1934 








7280 


Jem 


2 


13000 


Mar 8 1904 








11.82 


Jan 


2 


15.00 


Mar 8 1904 


343600 






266000 






181900 




1200 






663 






644 




206 






173 






94 




59 






45 






16 





SACRAMENTO RIVER BASIN 
1 1351600 COLLETT RESERVOIR NEAR LITTLE VALLEY, CA 



55 



LOCATION.--Lat 40°58'00", long 121°13'00", unsurveyed, Lassen County, Hydrologic Unit 18020003, on right bank, 1,9 mi east of Muck Valley 
powerplant, 5.5 mi northwest of Little Valley, and 9.1 mi southwest of Nubieber. 

PERIOD OF RECORD.-October 1991 to September 1992. October 1993 to current year. 

GAGE.-- Water-stage recorder. Datum of gage is sea level. 

REMARKS.-Lake is formed by earth and rockfill dam. Storage began December 31, 1990. Water is diverted from the Pit River through a tunnel 
to the reservoir. Operating pool from elevation 4,030 ft, capacity 1 55 acre-ft, to 4,065 ft, capacity 7,693 acre-ft. Crest of spillway is at elevation 
4,065 ft. Reservoir is used for power generation. Figures given represent total contents. Data not pubUshed below the minimum operating level 
at elevation 4,030 ft, capacity 155 acre-ft. See schematic diagram of Pit and McCloud River basins. 

COOPERATION— Records were provided by Malacha Hydro Limited Partnership, under general supervision of the U.S. Geological Survey, in 
connection with a Federal Energy Regulatory Commission project. 

Capacity table (elevation, in feet, and contents, in acre-feet) 

(Based on table provided by Malacha Hydro Limited Partnership, dated November 1991) 

4,030 155 4,040 1,899 

4,032 395 4,050 4,052 

4,035 931 4,065 7,693 



OCT 



RESERVOIR STORAGE (ACRE-FEET), WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 
DAILY OBSERVATION AT 2400 HOURS 

NOV DEC JAN FEB MAR APR MAY JUN JUL 



1 


e627 


909 


6288 


2127 


3686 


3493 


3406 


7377 


7539 


5211 


6315 


6255 


2 


e627 


941 


e288 


2324 


3676 


3484 


3381 


7330 


7501 


4920 


6315 


6255 


3 


g596 


957 


6288 


2519 


3662 


3474 


3355 


7417 


7542 


4630 


6315 


6255 


4 


e596 


494 


6288 


2687 


3654 


3462 


3366 


7506 


7417 


4625 


6299 


6255 


5 


e59e 


354 


6288 


2852 


3644 


3450 


3371 


7397 


7313 


4616 


6285 


6255 


6 


e596 


318 


6288 


2999 


3631 


3437 


3503 


7171 


7293 


4675 


e277 


6255 


7 


8596 


e288 


6288 


3155 


3628 


3426 


3565 


6569 


7566 


4388 


6255 


6255 


8 


e578 


e288 


6288 


3341 


3618 


3415 


3579 


6406 


7582 


4095 


6255 


6255 


9 


e547 


e288 


6288 


3498 


3593 


3401 


3584 


6492 


7506 


3804 


6255 


6255 


10 


e469 


e288 


407 


3624 


3585 


3391 


3590 


6613 


7331 


3510 


6255 


6255 


11 


e403 


e288 


617 


3662 


3572 


3440 


3668 


6738 


7262 


3219 


6255 


6255 


12 


e503 


e288 


825 


3650 


3562 


3430 


4282 


6750 


7039 


3213 


6255 


6255 


13 


6511 


e288 


1027 


3621 


3550 


3430 


5056 


6774 


6775 


3209 


6255 


6255 


14 


545 


6288 


1242 


3715 


3540 


3417 


5192 


6886 


6947 


2924 


e255 


6255 


15 


728 


6288 


1429 


3645 


3590 


3398 


5365 


6721 


7308 


2636 


e255 


6255 


16 


591 


e288 


1615 


3803 


3582 


3401 


5705 


6463 


7276 


2339 


6255 


6255 


17 


e491 


e288 


1664 


3901 


3580 


3388 


5992 


6453 


7102 


2142 


6255 


6259 


18 


e4S6 


e288 


1589 


3886 


3568 


3375 


6525 


6443 


7113 


1945 


6255 


6259 


19 


e456 


6288 


1175 


3872 


3559 


3361 


6757 


6181 


7390 


1942 


6255 


6259 


20 


456 


6288 


1052 


3866 


3549 


3353 


6889 


6277 


7158 


1941 


e255 


6259 


21 


583 


6288 


1052 


3840 


3537 


3341 


6986 


6460 


7349 


1739 


6255 


6259 


22 


664 


6288 


1056 


3834 


3528 


3329 


7092 


6323 


7383 


1543 


6255 


6273 


23 


604 


6288 


1056 


3900 


3569 


3319 


7164 


6083 


7043 


1344 


6255 


6313 


24 


G566 


6288 


1056 


3864 


3554 


3497 


7185 


6118 


6730 


1141 


6255 


e351 


25 


575 


6288 


1056 


3728 


3537 


3484 


7072 


6521 


6425 


941 


6255 


e351 


26 


579 


6288 


1069 


3709 


3526 


3442 


7021 


6971 


6120 


941 


6255 


6351 


27 


633 


6288 


1136 


3704 


3518 


3366 


7080 


6918 


5819 


941 


6255 


6351 


28 


804 


6288 


1320 


3704 


3505 


3344 


7176 


6668 


5819 


720 


6255 


6367 


29 


1127 


6288 


1520 


3701 





3331 


7274 


6624 


5819 


504 


6255 


6367 


30 


1355 


6288 


1715 


3692 





3425 


7369 


6799 


5505 


401 


6255 


6367 


31 


1380 





1907 


3690 





3425 





7261 





349 


6255 





MAX 


1380 


957 


1907 


3901 


3686 


3497 


7369 


7506 


7582 


5211 


315 


367 


MIN 


403 


288 


288 


2127 


3505 


3319 


3355 


6083 


5505 


349 


255 


255 


a 


3340 


8760 


22180 


34400 


33580 


36610 


24080 


14380 


8060 


5150 


133 


1240 



e Estimated. 

a Discharge, in acre-feet, for Muck Valley Powerplant (station 11351700), provided by Malacha Hydro Limited Partnership. 



S6 



SACRAMENTO RIVER BASIN 
11351950 PIT RIVER BELOW DIVERSION TO MUCK VALLEY POWERPLANT, NEAR BIEBER. CA 



LOCATION.--Lat 41°00'55", long 121°09' 13", in NE 1/4 SW 1/4 sec.27, T.37 N., R.7 E., Lassen County, Hydrologic Unit 18020003, on right 
bank 1.7 mi upstream from Nonh Gulch, 2.2 mi upstream from Spring Gulch, and 7.4 mi south of Bieber. 

DRAINAGE AREA.--2,475 mi^ excluding Goose Lake Basin. 

PERIOD OF RECORD.-October 1994 to current year. 

GAGE.-- Acoustic velocity meter measures minimum bypass flow and water-stage recorder and Ogee weir for spillway. Elevation of gage is 4, 1 20 ft 
above sea level, from topographic map. 

REMARKS.-Flow at this station has two components which are combined for publication: low flow release (station 1 1 35 1946) and flow over Ogee 
weir (station 11351948). Water is diverted upstream of weir through a tunnel toCollett Reservoir (station 11351600), for power generation. 
During powerplant operation, the minimum release is 50 ft^/s. See schematic diagram of Pit and McCloud River basins. 

COOPERATION— Records were provided by Malacha Hydro Limited Parmership, under general supervision of the U.S. Geological Survey, in 
connection with a Federal Energy Regulatory commission project. 

EXTREMES FOR PERIOD OF RECORD.-Maximum daily discharge, 16,800 ft'/s, Jan. 3, 1997; no flow many days during 1995 and 1997. 



DAY 



OCT 



DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 

NOV DEC JAN FEB MAR APR MAY JUN JtJL 



1 


43 


53 


53 


5430 


3840 


302 


398 


507 


52 




3.0 


.00 


1.0 


2 


31 


53 


53 


9600 


4350 


316 


390 


498 


39 




2.0 


.00 


1.0 


3 


36 


53 


53 


16800 


4610 


398 


344 


382 


55 




1.0 


.00 


1.0 


4 


31 


53 


53 


15700 


3940 


390 


275 


316 


50 




19 


1.0 


2.0 


5 


18 


53 


53 


11400 


3000 


374 


191 


324 


52 




43 


.00 


2.0 


6 


21 


53 


53 


7560 


2160 


316 


54 


54 


54 




40 


.00 


4.0 


7 


32 


53 


53 


5900 


1600 


316 


52 


53 


53 




28 


.00 


8.0 


B 


48 


53 


54 


4400 


1270 


367 


52 


53 


52 




4.0 


.00 


20 


9 


53 


53 


53 


3320 


1100 


390 


52 


53 


51 




2.0 


e5.0 


30 


10 


49 


53 


88 


2410 


1050 


344 


52 


53 


53 




1.0 


elO 


23 


11 


39 


52 


720 


el690 


1080 


288 


53 


53 


53 




1.0 


el5 


34 


12 


51 


53 


995 


el280 


1150 


237 


53 


53 


53 




1.0 


el5 


e23 


13 


51 


53 


1220 


e873 


1070 


203 


53 


53 


53 




1.0 


elO 


8.0 


14 


53 


52 


1340 


e560 


936 


103 


53 


53 


53 




1.0 


G5.0 


5.0 


15 


53 


52 


887 


e497 


764 


54 


53 


44 


52 




1.0 


2.0 


9.0 


IS 


53 


53 


397 


415 


690 


54 


53 


12 


51 




.00 


2.0 


12 


17 


23 


53 


53 


414 


797 


283 


53 


12 


53 




.00 


2.0 


34 


le 


39 


e53 


e48 


455 


983 


464 


53 


15 


247 




.00 


2.0 


32 


19 


45 


53 


54 


473 


996 


517 


53 


15 


e53 




.00 


2.0 


26 


20 


41 


53 


53 


481 


911 


473 


53 


35 


53 




.00 


1.0 


21 


21 


52 


53 


53 


422 


742 


439 


54 


53 


52 




.00 


.00 


25 


22 


53 


53 


53 


413 


620 


439 


330 


51 


43 




.00 


.00 


38 


23 


53 


53 


53 


1020 


516 


473 


489 


39 


7. 


,0 


.00 


.00 


e54 


24 


51 


53 


53 


355 


406 


535 


638 


39 


4. 


,0 


.00 


.00 


48 


25 


53 


53 


53 


362 


337 


516 


731 


53 


6. 


.0 


.00 


1.0 


17 


26 


41 


53 


54 


637 


276 


498 


720 


53 


16 




.00 


2.0 


10 


27 


48 


53 


54 


1020 


276 


472 


638 


47 


16 




.00 


2.0 


32 


28 


53 


53 


618 


1250 


295 


447 


534 


31 


22 




.00 


2.0 


37 


29 


53 


53 


1390 


2070 





455 


463 


53 


10 




.00 


1.0 


18 


30 


53 


53 


1920 


2960 





455 


455 


53 


4. 





.00 


1.0 


18 


31 


53 





3140 


3490 





422 


--- 


53 


-- 


■- 


.00 


1.0 


— - 


TOTAL 


1373 


1587 


13774 


103657 


39765 


11340 


7442 


3163 


1412. 





148.00 


82.00 


593.0 


MEAN 


44.3 


52.9 


444 


3344 


1420 


366 


248 


102 


47. 


1 


4.77 


2.65 


19.8 


MAX 


53 


53 


3140 


16800 


4610 


535 


731 


507 


247 


43 


15 


54 


MIN 


18 


52 


48 


355 


276 


54 


52 


12 


4. 





.00 


.00 


1.0 


AC -FT 


2720 


3150 


27320 


205600 


78870 


22490 


14760 


6270 


2800 


294 


163 


1180 


e Estimated. 



























SACRAMENTO RIVER BASIN 
1 1351950 PIT RIVER BELOW DIVERSION TO MUCK VALLEY POWERPLANT, NEAR BIEBER, CA— Continued 

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1995 - 1997, BY WATER YEAR (WY) 

OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG 



57 



MEAN 


36.3 


52.2 


208 


1776 


1623 


1819 


958 


1468 


204 


25.0 


4.30 


24.5 


MAX 


44.3 


53.5 


in 


3344 


3089 


3316 


1677 


3679 


459 


46.1 


7.03 


27.2 


(WY) 


1997 


1996 


1997 


1997 


1996 


1995 


1995 


1995 


1995 


1995 


1996 


1996 


HIN 


21.5 


50.3 


54.0 


336 


916 


366 


248 


102 


47.1 


4.77 


2.65 


19.8 


(WY) 


1995 


1995 


1995 


1996 


1995 


1997 


1997 


1997 


1997 


1997 


1997 


1997 



SUMMARY STATISTICS 

ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
ANNUAL RUNOFF (AC-FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1995 - 1997 



224511.00 




184336.00 














613 




505 






696 
997 

505 






1995 
1997 


6810 


Feb 22 


16800 


Jan 


3 


16800 


Jan 


3 


1997 


.00 


Jun 23 


.00 


Jul 


16 


.00 


Oct 


1 


1994 


1.4 


Aug 12 


.00 


Jul 


16 


.00 


Aug 


3 


1995 


445300 




365600 






504200 








1810 




1010 






1990 








53 




53 






53 








8.0 




1.0 






3.0 









58 



SACRAMENTO RIVER BASIN 
II 354200 PIT NO. 1 POWERPLANT NEAR FALL RIVER MILLS, CA 



LOCATION.--Ut 40°59'28", long 121°29'49'\ in SE 1/4 NE 1/4 sec. 10. T.37 N.. R.4E., Shasta County, Hydrologic Unit 18020003, on right bank 
of Pit River 2.3 mi downstream from Pit River Falls and 3.2 mi southwest of Fall River Mills. 

PERIOD OF RECORD.-October 1986 to current year. Unpublished records for water year^ 1973-86 available in files of the U.S. Geological 
Survey Fragmentary record for water years 1922-72 available in files of the Pacific Gas & Electric Co. 

GAGE— Discharge computed from powerplant output. 

REMARKS. -Water is diverted from Fall River at Pit No. 1 Forebay at NW 1/4 SW 1/4 sec.25, T.37 N.. R.4 E., through a tunnel to powerplant and 
then into Pit River. See schematic diagram of Pit and McCloud River basins. 

COOPERATION -Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD.-Maximum daily discharge, 2,490 fr'/s, Mar. 13, 1995; no flow, Aug. 21. 1992, Feb. 9-13, 1994, 
Dec. 13, 1995. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 

DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 



1 


1190 


1200 


1220 


1210 


2030 


1160 


1320 


1470 


1180 


1280 


1250 


1220 


2 


1070 


1200 


1230 


1130 


1980 


1180 


1290 


1330 


1450 


1270 


1260 


1240 


3 


1120 


1200 


1220 


1230 


1910 


1350 


1130 


1320 


1270 


1260 


1250 


1180 


4 


1110 


1200 


1230 


1220 


1800 


1290 


1170 


1350 


1270 


1260 


1260 


1260 


5 


1120 


1200 


1220 


1200 


1690 


1350 


1100 


1380 


1230 


1260 


1250 


1260 


6 


1170 


1200 


1220 


1200 


1780 


1300 


1040 


1390 


1270 


1260 


1240 


1260 


7 


1180 


1200 


1220 


1200 


1630 


1330 


1080 


1290 


1270 


1260 


1210 


1260 


8 


1140 


1200 


1220 


945 


1620 


1220 


1050 


1320 


1270 


1240 


1210 


1260 


9 


1190 


1180 


1220 


1190 


1560 


1190 


1160 


1260 


1270 


1220 


1180 


1260 


10 


1180 


1190 


1220 


1160 


1560 


1210 


1170 


1300 


1270 


1270 


1110 


1270 


11 


1170 


1190 


1200 


1270 


1580 


1210 


1200 


1220 


1270 


1260 


942 


1150 


12 


1150 


1210 


1210 


1320 


1440 


1100 


1400 


1180 


1270 


1240 


1220 


1260 


13 


1150 


1220 


1200 


1390 


1630 


1350 


1290 


1320 


1270 


1220 


1270 


1260 


14 


1160 


1220 


1200 


1340 


1470 


1250 


1400 


1250 


1270 


1220 


1260 


1260 


15 


1190 


1220 


1200 


1520 


1530 


1170 


1390 


1230 


1270 


1240 


1260 


1250 


16 


1190 


1210 


1240 


1370 


1400 


1240 


1340 


1280 


1270 


1260 


1250 


1260 


17 


1200 


1210 


1200 


1440 


1370 


1340 


1290 


1260 


1290 


1240 


1230 


1260 


18 


1190 


1140 


1200 


1310 


1550 


1360 


1420 


1180 


1270 


1230 


1200 


1260 


19 


1190 


1210 


1200 


1410 


1380 


1050 


1460 


1210 


1270 


1240 


1240 


1260 


20 


1190 


1220 


1210 


1410 


1430 


1330 


1530 


1220 


1280 


1240 


1220 


1260 


21 


1190 


1220 


1200 


1400 


1400 


1590 


1570 


1200 


1280 


1220 


1240 


1260 


22 


1190 


1220 


1200 


1710 


1400 


1290 


1510 


1290 


1270 


1240 


1230 


1260 


23 


1200 


1220 


1220 


1610 


1500 


1290 


1510 


1360 


1270 


1040 


1270 


1260 


24 


1200 


1220 


1210 


1500 


1190 


1300 


1510 


1300 


1280 


1270 


1270 


1260 


25 


1200 


1220 


1220 


1460 


1150 


1210 


1480 


1160 


397 


1260 


1220 


1260 


26 


1200 


1220 


1170 


1590 


1360 


1150 


1440 


1410 


1280 


1250 


1220 


1260 


27 


1200 


1220 


1220 


1820 


1380 


1220 


1460 


1360 


1280 


1230 


1270 


1260 


28 


1200 


1220 


1220 


1770 


1320 


1300 


1360 


1210 


1280 


1220 


1260 


1270 


29 


1200 


1220 


1220 


2120 





1100 


1330 


1290 


1280 


1240 


1260 


1260 


30 


1200 


1220 


267 


2060 





914 


1340 


1300 


1280 


1240 


1260 


1260 


31 


1200 





1200 


2050 





1400 





1170 


--- 


1250 


1250 


--- 


TOTAL 


36430 


36220 


36627 


44555 


43040 


38744 


39740 


39810 


37377 


38430 


38062 


37560 


MEAN 


1175 


1207 


1182 


1437 


1537 


1250 


1325 


1284 


1246 


1240 


1228 


1252 


MAX 


1200 


1220 


1240 


2120 


2030 


1590 


1570 


1470 


1450 


1280 


1270 


1270 


HIN 


1070 


1140 


267 


945 


1150 


914 


1040 


1160 


397 


1040 


942 


1150 


AC-FT 


72260 


71840 


72650 


88370 


85370 


76850 


78820 


78960 


74140 


76230 


75500 


74500 



SACRAMENTO RIVER BASIN 



59 



1 1354200 PIT NO. 1 POWERPLANT NEAR FALL RIVER MILLS, C A— Continued 

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1987 - 1997, BY WATER YEAR (WY) 

OCT NOV DEC JAN FEB MAR APR MAY JUN 



MEAN 


1100 


1117 


1107 


1169 


1197 


1393 


1365 


1270 


1127 


1050 


1029 


1063 


MAX 


1318 


1283 


1274 


1437 


1636 


1972 


1927 


1847 


1364 


1240 


1228 


1252 


(WY) 


1987 


1987 


1987 


1997 


1996 


1995 


1995 


1995 


1995 


1997 


1997 


1997 


MIN 


941 


971 


987 


996 


749 


1053 


1014 


947 


914 


844 


835 


900 


(WY) 


1995 


1995 


1995 


1992 


1994 


1992 


1994 


1992 


1994 


1992 


1992 


1994 



SUMMARY STATISTICS 

ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
ANNUAL RUNOFF (AC-FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1987 - 1997 



482450 




466595 








1318 




1278 




1165 

1336 

956 


1995 
1994 


2130 


Feb 22 


2120 


Jan 29 


2490 


Mar 13 1995 


267 


Dec 30 


267 


Dec 30 


.00 


Aug 21 1992 


1070 


Dec 25 


1070 


Dec 30 


68 


Feb 8 1994 


956900 




925500 




844200 




1660 




1460 




1430 




1210 




1250 




1130 




1130 




1170 




933 





60 



SACRAMENTO RIVER BASIN 
1 1355010 PIT RIVER BELOW PIT NO. 1 POWERPLANT, NEAR FALL RIVER MILLS, CA 



LOCATION.--Ut 40°59'00", long 121°30'39", in NE 1/4 NW 1/4 sec.15, T.36 N., R.4 E., Shasta County. Hydrologic Unit 18020003, on left bank 
0.9 mi downstream from Pit No. 1 Powerplant and 4 mi southwest of Fall River Mills. 

DRAINAGE AREA. --3,761 mi', excluding Goose Lake basin. 

PERIOD OF RECORD.-August 1975 to current year. 

GAGE— Water-stage recorder and crest-stage gage Elevation of gage is 2.798.21 ft above sea level (levels by Pacific Gas and Electric Co.). 

REMARKS— Records good. Low flow regulated by many small reservoirs (total usable reservoir capacity, 210,000 acre-ft) and Pit No. 1 
Powerplant. Many diversions upstream from station for irrigation. See schematic diagram of Pit and McCloud River basins. 

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 30,000 ft'/s, Feb. 20, 1986, gage height, 17.03 ft; minimum daily, 535 ft^/s, 
Sept. 11, 1994. 

EXTREMES OUTSIDE PERIOD OF RECORD.--Hood of January 1974 reached a stage of 14.8 ft, from floodmarks on right bank, discharge 

22,600 ftVs. 

EXTREMES FOR CURRENT YEAR. -Peak discharges greater than base discharge of 4,000 ft^/s, or maximum: 

Discharge Gage height Discharge Gage height 



Date 



Jan. 4 



Time 



1230 



(ft^/s) 



21,600 



(ft) 



15.05 



Date 



Time 



(ft-Vs) 



(ft) 



OCT 



DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 

NOV DEC JAN FEB MAR APR MAY JUN JUL 



1 


1390 


1680 


1520 


9430 


67000 


2380 


2630 


2710 


1350 


1500 


1360 


1310 


2 


1200 


1640 


1530 


11700 


67200 


2410 


2600 


2600 


1650 


1510 


1350 


1330 


3 


1240 


1490 


1520 


17100 


67300 


2610 


2400 


2550 


1540 


1490 


1340 


1300 


4 


1240 


1560 


1510 


20700 


67200 


2570 


2420 


2450 


1580 


1480 


1340 


1360 


5 


1250 


1660 


1550 


16600 


67050 


2650 


2280 


2440 


1560 


1390 


1340 


1360 


6 


1290 


1540 


1610 


12200 


66700 


2530 


2120 


2430 


1560 


1360 


1330 


1370 


7 


1290 


1530 


1690 


9690 


66300 


2540 


2100 


1990 


1540 


1380 


1290 


1360 


8 


1300 


1470 


1710 


7600 


65600 


2510 


2050 


2080 


1450 


1460 


1290 


1360 


9 


1350 


1430 


1880 


6000 


65200 


2500 


2130 


2020 


1490 


1440 


1240 


1370 


10 


1370 


1430 


2200 


4980 


65100 


2490 


2100 


1930 


1670 


1500 


1140 


1380 


11 


1360 


1420 


3020 


4070 


65500 


2420 


2150 


1860 


1790 


1480 


1070 


1290 


12 


1330 


1450 


3250 


3700 


65600 


2300 


2170 


1730 


1700 


1440 


1420 


1390 


13 


1310 


1470 


3460 


3440 


65200 


2510 


1900 


1830 


1690 


1310 


1380 


1450 


14 


1300 


1460 


3560 


2780 


64700 


2380 


2020 


1660 


1640 


1300 


1350 


1400 


15 


1360 


1450 


3230 


2680 


64100 


2330 


2130 


1570 


1540 


1410 


1350 


1410 


16 


1470 


1430 


2540 


2530 


63600 


2400 


2020 


1640 


1570 


1480 


1320 


1390 


17 


1460 


1450 


2230 


2580 


63500 


2560 


1870 


1570 


1640 


1440 


1300 


1390 


18 


1380 


1390 


2060 


2580 


63650 


2730 


2060 


1410 


1970 


1390 


1270 


1390 


19 


1410 


1490 


2040 


2670 


63600 


2530 


1970 


1420 


1780 


1400 


1310 


1450 


20 


1350 


1590 


1950 


2730 


63450 


2770 


2280 


1510 


1690 


1330 


1290 


1490 


21 


1340 


1990 


1820 


2720 


63400 


2970 


2420 


1530 


1640 


1290 


1320 


1400 


22 


1420 


1670 


1780 


2880 


63300 


2700 


2580 


1630 


1440 


1360 


1310 


1390 


23 


1450 


1820 


1750 


2490 


63150 


2670 


2770 


1680 


1430 


1220 


1350 


1450 


24 


1470 


1800 


1740 


2600 


63000 


2680 


2890 


1660 


1530 


1440 


1350 


1430 


25 


1470 


1720 


1690 


2630 


62900 


2670 


3010 


1460 


1120 


1440 


1290 


1490 


26 


1490 


1640 


1750 


2830 


62750 


2580 


3000 


1650 


1610 


1420 


1290 


1400 


27 


1370 


1590 


2170 


3440 


2610 


2660 


2950 


1580 


1520 


1320 


1360 


1380 


28 


1360 


1550 


2540 


4050 


2510 


2640 


2720 


1540 


1520 


1290 


1360 


1370 


29 


1490 


1540 


3520 


5350 





2530 


2610 


1600 


1420 


1350 


1360 


1370 


30 


1500 


1530 


5050 


66400 





2280 


2570 


1750 


1410 


1410 


1350 


1380 


31 


1510 





7090 


66700 





2670 





1490 





1370 


1340 





TOTAL 


42520 


46880 


74960 


187850 


131170 


79170 


70920 


56970 


47040 


43400 


40760 


41610 


MEAN 


1372 


1563 


2418 


6060 


4685 


2554 


2364 


1838 


1568 


1400 


1315 


1387 


MAX 


1510 


1990 


7090 


20700 


7300 


2970 


3010 


2710 


1970 


1510 


1420 


1490 


MIN 


1200 


1390 


1510 


2490 


2510 


2280 


1870 


1410 


1120 


1220 


1070 


1290 


AC -FT 


84340 


92990 


148700 


372600 


260200 


157000 


140700 


113000 


93300 


86080 


80850 


82530 


e Estimated. 

























SACRAMENTO RIVER BASIN 
1 1355010 PIT RIVER BELOW PIT NO. 1 POWERPLANT, NEAR FALL RIVER MILLS, CA— Continued 



61 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1975 - 1997, BY WATER YEAR (WY) 



JUL 



AUG 



MEAN 


1370 


1594 


1789 


2281 


2863 


3207 


2521 


2193 


1569 


1292 


1253 


1292 


MAX 


1722 


3181 


3834 


6060 


8539 


6539 


5614 


6883 


2789 


1666 


1563 


1623 


(WY) 


1976 


1982 


1984 


1997 


1986 


1993 


1982 


1995 


1983 


1983 


1983 


1983 


MIN 


939 


1133 


1214 


1222 


1268 


1294 


1173 


1050 


1012 


954 


828 


784 


(WY) 


1995 


1993 


1993 


1991 


1994 


1992 


1992 


1992 


1992 


1994 


1994 


1994 



SUMMARY STATISTICS 

ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC -FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 197 5 



880427 






863250 










2406 






2365 






1928 
2895 
1149 


1995 
1992 


10800 


Feb 


22 


20700 


Jan 


4 


28800 


Feb 20 1986 


887 


Aug 


25 


1070 


Aug 


11 


535 


Sep 11 1994 


1190 


Aug 


19 


1240 


Aug 


5 


663 


Sep 7 1994 








21600 


Jan 


4 


30000 


Feb 20 1986 








15.05 


Jan 


4 


17,03 


Feb 20 1986 


1746000 






1712000 






1397000 




4270 






3580 






3140 




1700 






1640 






1470 




1280 






1330 






1150 





62 SACRAMENTO RIVER BASIN 

1 1358020 LOST CREEK BELOW DIVERSION TO LOST CREEK POWERPLANT NO. 1, NEAR OLD STATION, CA 

LOCATION,-Ut 40°45'35". long 12r24'46", in NW 1/4 SW 1/4 sec.34, T.34 N., R.5 E., Shasta County, Hydrologic Unit 18020003, on right 
bank 0.4 mi downstream from Lost Creek Diversion Dam, 2.5 mi downstream from Porcupine Reservoir, 6.0 mi north of Old Station, and 
13.2 mi southeast of Cassel. 

DRAINAGE AREA.--7.53 mil 

PERIOD OF RECORD. --October 1989 to current year (operated as low-flow station only). 

GAGE— Water-stage recorder and sharp-crested weir. Elevation of gage is 3,900 ft above sea level, from topographic map. 

REMARKS— During times of powerplant operation, the minimum release requirement is 15 ft^/s; flow is computed to 80 ft^/s. See schematic 
diagram of Pit and McCloud River basins. 

COOPERATION— Records were collected by Snow Mountain Hydro, under general supervision of the U.S. Geological Survey, in cotmection with 
a Federal Energy Regulatory Commission project. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 



1 


elB 


e56 


16 





20 


17 


16 


16 


16 


17 


17 


17 


2 


el8 


e56 


16 





17 


16 


16 


17 


17 


16 


17 


17 


3 


el8 


e56 


16 





17 


16 


16 


16 


17 


17 


17 


26 


4 


el8 


e56 


16 





17 


16 


16 


16 


17 


16 


17 


21 


5 


18 


e56 


16 


76 


17 


17 


16 


17 


16 


17 


23 


17 


6 


17 


e56 


20 


36 


17 


17 


16 


16 


17 


17 


17 


17 


7 


17 


e56 


16 


29 


17 


31 


17 


16 


17 


16 


17 


17 


8 


17 


e56 


16 


23 


17 


59 


16 


17 


17 


17 


17 


17 


9 


17 


e56 


16 


21 


17 


59 


16 


16 


20 


17 


17 


17 


10 


16 


e56 


16 


19 


17 


31 


16 


16 


19 


28 


17 


17 


11 


19 


e56 


16 


17 


17 


59 


17 


16 


26 


17 


21 


17 


12 


16 


e56 


16 


17 


17 


59 


17 


16 


25 


17 


17 


17 


13 


16 


656 


16 


19 


21 


47 


el7 


17 


17 


17 


17 


17 


14 


el6 


656 


16 


19 


660 


16 


22 


17 


17 


17 


20 


21 


15 


el6 


e56 


16 


19 


661 


17 


17 


16 


17 


17 


18 


17 


16 


el6 


e56 


16 


17 


e61 


17 


16 


17 


17 


19 


18 


17 


17 


el6 


656 


16 


17 


661 


27 


17 


16 


17 


17 


17 


17 


18 


el6 


656 


16 


17 


661 


16 


17 


16 


17 


16 


17 


17 


19 


el6 


656 


16 


17 


30 


16 


17 


16 


17 


16 


17 


17 


20 


el6 


656 


16 


17 


21 


16 


17 


16 


17 


17 


17 


17 


21 


el6 


656 


616 


17 


17 


16 


17 


16 


17 


16 


18 


17 


22 


el6 


656 


616 


40 


16 


16 


17 


17 


17 


16 


18 


17 


23 


el7 


34 


el6 


44 


17 


16 


16 


16 


16 


16 


18 


17 


24 


el7 


16 


616 


17 


16 


18 


17 


16 


17 


19 


18 


34 


25 


17 


16 


eie 


29 


16 


29 


17 


16 


17 


16 


17 


17 


26 


17 


16 


el6 


17 


16 


16 


17 


16 


17 


19 


17 


17 


27 


17 


16 


el6 


18 


17 


17 


17 


17 


17 


16 


17 


17 


28 


17 


16 


6l6 


21 


16 


16 


16 


17 


17 


27 


17 


17 


29 


e56 


21 


el6 


24 





17 


16 


17 


17 


19 


17 


17 


30 


e56 


16 


616 


37 





17 


16 


17 


17 


26 


17 


17 


31 


e56 





616 


17 





16 





17 





21 


17 





TOTAL 


639 


1383 


500 





714 


763 


501 


508 


529 


559 


546 


544 


MEAN 


20.6 


46.1 


16.1 





25.5 


24.6 


16.7 


16.4 


17.6 


18.0 


17.6 


18.1 


MAX 


56 


56 


20 





61 


59 


22 


17 


26 


28 


23 


34 


MIN 


16 


16 


16 





16 


16 


16 


16 


16 


16 


17 


17 


AC -FT 


1270 


2740 


992 





1420 


1510 


994 


1010 


1050 


1110 


1080 


1080 


a 


2040 


541 


2450 


2570 


1760 


2380 


2480 


2640 


2420 


2410 


2550 


2460 



e Estimated. 

a Discharge, in acre-feel, for Lost Creek No. 1 Powerplant (station 1 1358010), provided by Snow Mountain Hydro. 



SACRAMENTO RTVER BASIN 
1 1358700 HAT CREEK BELOW HAT NO. 1 DIVERSION DAM, NEAR BURNEY, CA 



63 



LOCATION.--Ut40°55'08",long 121°33'02", inNW 1/4SW 1/4 sec.5, T.36 N., R.4E., Shasta County, Hydrologic Unit 18020003, on right bank 
at Hat No. 1 diversion dam on Hat Creek, 6.5 mi northeast of Bumey. 

DRAINAGE AREA.--347 mi^. 

PERIOD OF RECORD.--Oct. 1 to Dec. 8, 1987 (fragmentary), Dec. 9, 1987, to current year (operated as a low-flow station only). Unpublished 
fragmentary records for water years 1980-87 available in files of the U.S. Geological Survey. 

GAGE— Water-stage recorder and Cipolletti weir. Elevation of gage is 3,180 ft above sea level, from topographic map. 

REMARKS. -This station records fishwater release only. The minimum release requirement is 2.0 ft-'/s at all times. Flow is computed to 6.0 ft-'/s. 
See schematic diagram of Pit and McCloud River basins. 

COOPERATION. -Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



DAY 



OCT 



NOV 



DEC 



JAN 



FEB 



MAR 



APR 



MAY 



JtJN 



JUL 



1 


2.8 


2.6 


2.8 


2.8 


2.8 


2.8 


2.9 


2.8 


2.9 


2.8 


2.9 


3.0 


2 


2.8 


2.6 


2.8 





2.8 


2.8 


2.9 


2.7 


2.9 


2.9 


2.9 


3.1 


3 


2.8 


2.6 


2.8 


2.7 


2.8 


2.8 


2.9 


2.7 


2.9 


2.9 


2.9 


3.4 


4 


2.8 


2.5 


2.8 


2.6 


2.8 


2.8 


2.9 


2.7 


2.9 


2.8 


2.9 


3.1 


5 


2.9 


2.6 


2.9 


2.6 


2.7 


2.8 


2.9 


2.7 


3.0 


2.8 


3.0 


3.1 


6 


2.9 


2.7 


2.9 


2.6 


2.6 


2.8 


2.9 


2.8 


3.0 


2.8 


3.1 


3.0 


7 


2.9 


2.7 


2.8 


2.7 


2.8 


2.7 


2.9 


2.9 


3.0 


2.9 


3.1 


3.0 


8 


2.9 


3.0 


2.8 


2.8 


2.9 


2.7 


2.8 


2.9 


3.0 


3.0 


3.1 


3.0 


9 


2.7 


3.0 


3.0 


2.8 


2.9 


2.8 


2.8 


2.8 


3.0 


2.9 


3.1 


3.0 


10 


2.7 


2.9 


2.8 


2.8 


2.8 


2.8 


2.8 


2.8 


3.0 


2.8 


3.1 


3.0 


11 


2.7 


2.9 


2.9 


2.8 


3.0 


2.8 


2.8 


2.7 


3.0 


2.8 


3.3 


2.9 


12 


2.6 


2.9 


2.9 


2.9 


3.0 


2.8 


2.7 


2.7 


3.0 


3.0 


3.0 


2.9 


13 


2.6 


2.9 


2.9 


2.8 


2.9 


2.8 


2.8 


2.8 


3.0 


3.5 


3.0 


2.9 


14 


2.6 


2.8 


2.8 


2.9 


2.8 


2.9 


2.8 


2.7 


3.0 


3.3 


3.0 


2.8 


15 


2.7 


2.8 


2.8 


2.9 


2.7 


2.9 


2.8 


2.8 


3.0 


3.1 


3.0 


2.8 


16 


2.7 


2.8 


2.8 


3.0 


2.7 


2.9 


2.7 


3.1 


3.0 


3.0 


3.0 


2.9 


17 


2.8 


3.0 


2.8 


3.0 


2.5 


2.9 


2.8 


3.0 


2.9 


3.0 


3.0 


2.9 


18 


3.0 


2.9 


2.8 


3.0 


2.7 


2.9 


2.8 


3.0 


3.0 


2.9 


3.1 


2.8 


19 


2.9 


2.8 


2.8 


3.0 


2.8 


2.8 


2.9 


3.0 


3.0 


3.2 


3.0 


2.8 


20 


2.9 


2.8 


2.8 


3.0 


2.8 


2.8 


2.9 


3.0 


3.0 


3.2 


3.1 


2.7 


21 


2.9 


2.8 


2.8 


3.0 


2.8 


2.8 


2.9 


2.9 


3.0 


3.1 


3.0 


2.7 


22 


2.9 


2.8 





3.1 


2.8 


2.9 


3.0 


2.9 


3.0 


3.0 


2.9 


2.7 


23 


2.9 


2.9 


2.9 


3.0 


2.8 


2.9 


3.0 


2.9 


3.0 


2.9 


2.9 


2.7 


24 


2.7 


2.9 


2.8 


3.0 


2.7 


2.9 


3.4 


2.9 


3.0 


2.9 


3.0 


2.7 


25 


2.6 


2.8 


2.8 


3.0 


2.7 


3.4 


3.2 


2.9 


2.9 


2.9 


3.0 


2.7 


26 


2.5 


2.7 


2.8 


3.1 


2.8 


3.0 


2.9 


2.9 


2.9 


2.9 


3.0 


2.7 


27 


2.4 


2.7 


2.8 


3.1 


2.8 


2.9 


2.9 


2.9 


2.9 


2.9 


3.0 


2.7 


28 


2.6 


2.7 


2.8 


3.0 


2.8 


2.9 


2.8 


2.9 


2.9 


3.0 


3.0 


2.7 


29 


2.6 


2.7 


2.8 


2.8 





2.9 


2.8 


2.9 


2.8 


2.8 


3.0 


2.7 


30 


2.6 


2.7 


2.8 


2.8 





2.9 


2.8 


3.0 


2.5 


2.8 


3.0 


2.7 


31 


2.6 





2.8 


2.8 





2.9 





2.9 





2.8 


2.9 





TOTAL 


85.0 


83.5 








78.0 


88.7 


86.4 


88.6 


88.4 


91.6 


93.3 


86.1 


MEAN 


2.74 


2.78 








2.79 


2.86 


2.88 


2.86 


2.95 


2.95 


3.01 


2.87 


MAX 


3.0 


3.0 








3.0 


3.4 


3.4 


3.1 


3.0 


3.5 


3.3 


3.4 


MIN 


2.4 


2.5 








2.5 


2.7 


2.7 


2.7 


2.5 


2.8 


2.9 


2.7 


AC- FT 


169 


166 








155 


176 


171 


176 


175 


182 


185 


171 



64 



SACRAMENTO RTVER BASIN 
1 1 358800 HAT CREEK NO. 1 POWERPLANT NEAR BURNEY. CA 



LOCATION.-Lat 40°55'45", long 121°32'37". in SW 1/4 SW 1/4 sec.32, T.36 N., R.4 E., Shasta County, Hydrologic Unit 18020003, on right 
bank of Hat Creek at the upper end of Baum Lake, 7.4 mi northeast of Bumey. 

PERIOD OF RECORD.-October 1986 to current year Unpublished records for water years 1981-86 available in files of the U.S. Geological 
Survey. Fragmentary records for water years 1921-80 available in the files of the Pacific Gas & Electric Co. 

GAGE— Discharge computed from powerplant output. 

REMARKS. -Water is diverted from left bank of Hat Creek at NW 1/4 SW 1/4 sec.5, T.36 N., R.8 W., through a canal to powerplant and then into 
Hat Creek. See schematic diagram of Pit and McCloud River basins. 

COOPERATION— Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD.-Maximum daily discharge, 453 ft^/s, Oa. 20. 1986; no flow several days most years. 

DISCHARGE. CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 
DAY OCT NOV DEC JAN FEB MAR APR KAY JUN Jtn. AUG SEP 



1 


280 


325 


347 


432 


454 


398 


420 


375 


313 


291 


291 


302 


2 


280 


325 


347 


466 


454 


398 


399 


375 


302 


325 


291 


280 


3 


280 


325 


364 


483 


420 


409 


387 


375 


313 


336 


291 


280 


i 


280 


347 


364 


517 


466 


409 


387 


375 


313 


336 


280 


302 


5 


280 


347 


364 


443 


443 


409 


387 


313 


302 


336 


280 


291 


6 


280 


347 


364 


443 


443 


375 


381 


302 


302 


336 


280 


291 


7 


280 


336 


364 


420 


420 


375 


347 


291 


302 


302 


291 


291 


8 


280 


336 


364 


420 


420 


375 


347 


268 


302 


302 


302 


291 


9 


273 


347 


375 


420 


420 


375 


387 


291 


336 


280 


302 


280 


10 


291 


347 


375 


420 


420 


375 


364 


291 


325 


280 


302 


280 


11 


291 


347 


375 


420 


420 


387 


364 


291 


347 


280 


267 


280 


12 


291 


336 


398 


420 


420 


387 


364 


302 


336 


286 


291 


291 


13 


291 


336 


398 


409 


420 


387 


364 


302 


336 


280 


291 


325 


14 


280 


336 


398 


409 


420 


387 


336 


302 


336 


280 


291 


325 


15 


280 


336 


398 


409 


420 


387 


302 


291 


336 


291 


280 


336 


16 


280 


336 


387 


398 


420 


387 


302 


291 


336 


302 


280 


325 


17 


280 


336 


375 


398 


420 


387 


302 


291 


336 


302 


280 


325 


18 


280 


347 


375 


398 


420 


409 


302 


291 


291 


302 


280 


325 


19 


280 


375 


364 


398 


420 


409 


302 


313 


295 


302 


280 


325 


20 


280 


375 


364 


398 


416 


409 


302 


336 


302 


302 


291 


325 


21 


313 


364 


364 


409 


398 


398 


347 


347 


302 


302 


291 


325 


22 


325 


364 


302 


409 


398 


398 


398 


302 


302 


302 


280 


325 


23 


336 


358 


364 


409 


398 


398 


398 


325 


302 


302 


280 


325 


24 


34-7 


375 


364 


409 


398 


398 


398 


325 


291 


302 


280 


302 


25 


387 


364 


364 


409 


398 


336 


398 


325 


291 


280 


280 


302 


26 


387 


347 


364 


409 


409 


409 


398 


325 


302 


280 


280 


291 


27 


370 


364 


364 


409 


409 


409 


398 


325 


302 


280 


313 


291 


28 


347 


364 


364 


432 


398 


409 


375 


325 


302 


280 


313 


291 


29 


325 


347 


375 


420 





409 


375 


325 


302 


268 


313 


291 


30 


336 


347 


387 


420 





409 


375 


313 


302 


280 


302 


280 


31 


347 





432 


420 





375 





313 





291 


302 





TOTAL 


9457 


10436 


11504 


13076 


11762 


12182 


10906 


9816 


9359 


9218 


8975 


9093 


MEAN 


305 


348 


371 


422 


420 


393 


364 


317 


312 


297 


290 


303 


MAX 


387 


375 


432 


517 


466 


409 


420 


375 


347 


336 


313 


336 


MIN 


273 


325 


302 


398 


398 


336 


302 


268 


291 


268 


267 


280 


AC -FT 


18760 


20700 


22820 


25940 


23330 


24160 


21630 


19470 


18560 


18280 


17800 


18040 


a 


25040 


26890 


29200 


29570 


26940 


19050 


29450 


27780 


27240 


26780 


25720 


25880 



a Discharge, in acre-feet, for Hat Creek No. 2 Powerplant (station 1 1359300), provided by Pacific Gas & Electric Co. 



SACRAMENTO RIVER BASIN 
11359100 HAT NO. 2 POWER CANAL DIVERSION TO HAT CREEK, NEAR BURNEY, CA 



65 



LOCATION.--Ut 40°57'01 ", long 12 r32' 39", in SE 1/4 NW 1/4 sec.29, T.36 N., R.4 E., Shasta County, Hydrologic Unit 1 8020003, on right bank 
of Hat No. 2 Power Canal 75 ft downstream from Hat No. 2 Diversion Dam on Hat Creek, 7.9 mi northeast of Bumey. 

PERIOD OF RECORD.--Oct. 1 to Dec. 9, 1987 (fragmentary), Dec. 10, 1987, to current year (operated as a low-flow station only). Unpublished 
fragmentary records for water years 1979-87 available in files of the U.S. Geological Survey. 

GAGE.-Water-stage recorder and Parshall flume. Elevation of gage is 2,980 ft sea level, from topographic map. 

REMARKS— This station records fishwater release only. The minimum release requirement is 8.0 ft'/s at all times. Flow is computed to 15 ft^/s. 
See schematic diagram of Pit and McCloud River basins. 

COOPERATION. -Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



NOV 



JUL 



SEP 



1 


9.7 


10 


9.7 


11 


9.7 


10 


11 


9.7 


9.4 


11 


11 


11 


2 


9.5 


10 


9.7 


10 


9.8 


9.9 


10 


9.1 


9.6 


10 


11 


11 


3 


9.5 


10 


9.6 


9.9 


9.7 


9.9 


10 


8.8 


9.6 


10 


11 


11 


4 


9.6 


10 


9.6 


9.7 


9.7 


9.9 


10 


8.7 





9.8 


11 


11 


5 


9.6 


10 


9.8 


9.7 


9.8 


9.9 


10 


8.9 





9.6 


11 


10 


6 


9.5 


10 


9.8 


9.7 


9.8 


9.9 


11 


9.1 


11 


9.8 


11 


10 


7 


9.7 


10 


9.8 


9.7 


9.9 


9.9 


11 


9.1 


11 


11 


11 


10 


8 


9.8 


9.9 


9.8 


9.7 


9.9 


9.9 


10 


9.2 


11 


11 


11 


10 


9 


9.7 


10 


9.8 


9.7 


9.9 


9.9 


10 


9.3 


11 


10 


11 


10 


10 


9.8 


9.9 


10 


9.7 


9.9 





9.6 


9.3 


11 


10 


11 


11 


11 


10 


9.9 


10 


9.7 


9.9 





9.0 


9.0 


10 


11 


11 


11 


12 


9.7 


9.9 


10 


9.7 


9.9 





8.9 


9.2 


9.9 


10 


11 


11 


13 


9.7 


9.9 


10 


9.7 


10 





9.2 


9.6 


11 


10 


11 


11 


14 


9.7 


9.9 


9.9 


9.7 


9.9 





9.2 


9.7 


11 


10 


11 


11 


15 


9.7 


9.9 


9.9 


9.7 


9.9 





9.1 


9.7 


11 


9.9 


11 


11 


16 


9.7 


9.9 


9.8 


9.7 


9.9 





9.2 


9.7 


11 


9.8 


11 


11 


17 


9.8 


10 


9.8 


9.7 


9.9 





9.3 


9.6 


10 


11 


11 


11 


18 


10 


10 


9.7 


9.7 


9.9 





9.3 


9.4 


10 


11 


11 


11 


19 


10 


10 


9.7 


9.7 


9.9 





9.6 


9.5 


11 


11 


11 


11 


20 


10 


10 


9.7 


9.7 


9.9 





10 


9.5 


10 


11 


11 


11 


21 


10 


10 


9.7 


9.7 


9.9 





10 


9.2 


10 


10 


11 


11 


22 


10 


10 


9.7 


9.9 


9.9 





10 


8.7 


11 


10 


11 


10 


23 


10 


10 


9.7 


9.8 


9.9 





10 


8.9 


11 


11 


11 


10 


24 


10 


10 


9.7 


9.7 


9.9 





10 


8.8 


11 


11 


11 


10 


25 


10 


10 


9.7 


9.8 


9.9 


- — 


10 


8.5 


11 


11 


11 


10 


26 


10 


9.8 


9.7 


9.8 


10 


9.3 


9.9 


8.5 


11 


11 


11 


10 


27 


10 


9.8 


9.9 


9.8 


9.9 


9.4 


9.8 


10 


11 


11 


11 


10 


28 


10 


9.7 


9.8 


9.7 


10 


9.6 


9.7 


11 


11 


11 


11 


10 


29 


10 


9.8 


9.8 


9.7 





9.8 


9.7 


10 


11 


11 


11 


10 


30 


10 


9.7 


10 


9.7 





10 


9.8 


9.9 


12 


11 


10 


10 


31 


10 


— - 


10 


9.7 


--- 


10 





9.4 





11 


10 





TOTAL 


304.7 


298.0 


303.8 


303.1 


276.6 





294.3 


289.0 





325.9 


339 


316 


MEAN 


9.83 


9.93 


9.80 


9.78 


9.88 





9.81 


9.32 





10.5 


10.9 


10.5 


MAX 


10 


10 


10 


11 


10 





11 


11 





11 


11 


11 


MIN 


9.5 


9.7 


9.6 


9.7 


9.7 





8.9 


8.5 





9.6 


10 


10 


AC -FT 


604 


591 


603 


601 


549 





584 


573 





646 


672 


627 



66 SACRAMENTO RIVER BASIN 

RESERVOIRS IN PIT AND McCLOUD RIVER BASINS. CA 

11361400 LAKE BRITTON NEAR BURNEY.-Lal 41''r20", long 12r40'32", in SW 1/4 SW 1/4 sec.l9, T 37 N.. R.3 E.Shasta County, 

Hydrologic Unit 1 8020003, Shasta National Forest, at control house on right bank 200 ft upstream from dam on Pit River, 1 1 mi downstream 
from Clark Creek, 1 .3 mi northwest of Bumey Falls, and 9 mi north of Bumey. DRAINAGE AREA, 4,607 mi^, excluding Goose Lake Basin. 
PERIOD OF RECORD, October 1965 to current year (monthend contents only). Fragmentary records for water years 1925-65 in files of the 
Pacific Gas & Electric Co. GAGE, remote telemark read once daily. Datum of gage is 19.53 ft above sea level (levels by Pacific Gas & Electric 
Co.). Monthend contents based on capacity table dated Dec. 1, 1976, provided by Pacific Gas & Electric Co. 

REMARKS. --Reservoir is formed by gravity-type concrete dam. Storage began July 15, 1925. Usable capacity, 41,877 acre-ft between 
elevations 2,665.0 ft, invert of sluice gate, and 2,758.0 ft, top of flash boards. Dead storage, 30 acre-ft. Normal operating pool is from 
elevation 2,744.0 ft, capacity, 26.183 acre-ft. to 2,757.0 ft, capacity, 40,626 acre-ft. Figures given represent total contents Lake is used for 
power generation and recreation. See schematic diagram of Pit and McCloud River basins. Records prior to water year 1 977 reported usable 
contents only. 

COOPERATION. -Record of contents collected by Pacific Gas & Electric Co.. under general supervision of the U.S. Geological Survey, in 
connection with a Federal Energy Regulatory Commission project. Contents not rounded to US. Geological Survey standards. 

EXTREMES (AT 2400) FOR PERIOD OF RECORD.-Maximum total contents, 47,922 acre-ft. Feb. 20, 1986, elevation, 2.762.50 ft; 
minimum total contents. 26.755 acre-ft. Oct. 9. 1976, elevation, 2,744.60 ft. 

EXTREMES (AT 2400) FOR CURRENT YEAR.-Maximum contents, 43,403 acre-ft, Jan. 4, elevation, 2,759.15 ft; minimum, 
25,534 acre-ft. May 23, elevation, 2,743.31 ft. 

11363920 IRON CANYON RESERVOIR NEAR BIG BEND.-Lat4r02'41 ", long 12r58'52", in SW 1/4 SE 1/4 sec.21, T.37 N., R 1 W.. Shasta 
County, Hydrologic Unit 18020(X)3, Shasta National Forest, in control house on left bank 500 ft upstream from Iron Canyon Dam on Iron 
Canyon Creek. 3.7 mi northwest of Big Bend. DRAINAGE AREA. 1 1 . 1 mi^. PERIOD OF RECORD. December 1965 to current year 
(monthend contents only). GAGE, water-stage recorder. Datum of gage is sea level (levels by Pacific Gas & Electric Co.). Monthend contents 
based on capacity table dated May 17, 1965, provided by Pacific Gas & Electric Co. 

REMARKS. -Reservoir is formed by a rockfiU dam completed in 1965. Usable capacity is 24,197 acre-ft between elevations 2,525.00 ft, 
invert of sluice pipe, and 2,665.00 ft, crest of spillway. Dead storage, 44 acre-ft. Normal operating pool is from elevation 2,565.0 ft, 
capacity, 990 acre-ft, to 2,664.0 ft, capacity, 23.738 acre-ft. Water is diverted from Lake McCloud (station 1 1367740) through a tunnel to 
Iron Canyon Reservoir and then into the Pit River via James B . Black Powerplant (station 1 1 36391 0). Figures given represent total contents. 
Water is used for power generation and recreation. See schematic diagram of Pit and McCloud River basins. 

COOPERATION— Record of contents collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in 
connection with a Federal Energy Regulatory Commission project. Contents not rounded to U.S. Geological Survey standards. 

EXTREMES (AT 2400) FOR PERIOD OF RECORD.-Maximum contents, 23,539 acre-ft. May 16, 22, 1977, elevation, 2,663.60 ft; normal 
minimum since reservoir first filled, 2,860 acre-ft. May 23, 24, 29, June 2, 7, 9, 14, 23, 24, 1966, elevation, 2,590.00 ft. Contents reduced 
to 195 acre-ft, elevation, 2,540.00 ft, Feb. 10, 1971, when reservoir was drained for inspection. 

EXTREMES (AT 2400) FOR CURRENT YEAR.-Maximum contents, 20.098 acre-ft. July 29. elevation, 2,656.30 ft; minimum, 
3,209 acre-ft, Dec. 26, Mar. 2. elevation, 2,593.10 ft. 

1 1367740 LAKE McCLOUD NEAR McCLOUD.-Lat 41°08'06". long 122''04'26", in SE 1/4 SW 1/4 sec.22, T.38 N., R.2 W., Shasta County. 
Hydrologic Unit 18020004, Shasta National Forest, on McCloud Dam near spillway on McQoud River, 200 ft downstream from Panther 
Creek, and 8.8 mi southeast of McCloud. DRAINAGE AREA, 403 mi". PERIOD OF RECORD, October 1965 to current year (monthend 
contents only). GAGE, water-stage recorder. Datum of gage is sea level (levels by Pacific Gas & Electric Co.). Monthend contents based on 
capacity table dated June 29, 1965, provided by Pacific Gas & Electric Co. 

REMARKS. -Reservoir is formed by a rockfill dam completed in 1965. Usable capacity, 35,231 acre-ft between elevations 2,471 .30 ft, invert 
of sluice pipe, and 2,680.00 ft, maximum operational water surface. Dead storage, 3 acre-ft. Normal operating pool is from elevation 
2,635.00 ft, capacity, 16,425 acre-ft, to 2,680.00 ft, capacity, 35.234 acre-ft. Water is diverted from Lake McCloud (station 1 1367740) 
through a diversion tunnel to Iron Canyon Reservoir (station 1 1363920) and then into the Pit River via James B. Black Powerplant (station 
1 1 3639 1 0). Figures given represent total contents. Water is used for power generation and recreation. See schematic diagram of Pit and 
McCloud River basins. 

COOPERATION. -Record of contents collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in 
connection with a Federal Energy Regulatory Conmiission project. Contents not rounded to U.S. Geological Survey standards. 

EXTREMES (AT 2400) FOR PERIOD OF RECORD.-Maximum contents, 35,967 acre-ft, Jan. 15, 1974, elevation, 2,681.40 ft; minimum 
since reservoir first filled, 13,017 acre-ft, Oct. 14-22, 1981, elevation, 2,632.50 ft. 

EXTREMES (AT 2400) FOR CURRENT YEAR.-Maximum contents. 35,079 acre-ft. Dee. 30, elevation, 2,679.70 ft; minimum, 
20,888 acre-ft, Dec. 7, elevation, 2,647.80 ft. 



SACRAMENTO RIVER BASIN 

RESERVOIRS IN PIT AND McCLOUD RIVER BASINS, CA— Continued 

MONTHEND ELEVATION AND CONTENTS AT 2400 HOURS, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

11361400 LAKE BRITTON 11363920 IRON CANYON RESERVOIR 11367740 LAKE McCLOUD 



67 



Date 



Change in 
Contents contents 
Elevation (acre- (acre- 

(feet) feet) feet) 



Change in 
Contents contents 
Elevation (acre- (acre- 
(feet) feet) feet) 



Change in 
Contents contents 
Elevation acre- (acre- 

(feet) feet) feet) 



Sept. 30 2,755.20 

Oct. 31 2,753.42 

Nov. 30 2,749.99 

Dec. 31 2,756.59 

CAL YR 1996 .... - 

Jan. 31 2,756.70 

Feb. 28 2,756.80 

Mar. 3L 2,756.40 

Apr. 30 2 756.20 

May 31 2,749.30 

June 30 2,754.65 

July 31 2,752.55 

Aug. 31 2,753.80 

Sept. 30 2,755.80 

WTR YR 1997 . . . . - 



38,379 


- 


2,637.10 


12,750 


- 


2,656.40 


24.276 


- 


36,236 


-2,143 


2,637.80 


12,977 


-H227 


2,654.40 


23,459 


-817 


32,313 


-3,923 


2,617.70 


7,402 


•5,575 


2,656.20 


24,194 


+735 


40,104 


■^7,791 


2,615.90 


6,996 


-406 


2,678.70 


34,562 


+10,368 


- 


-h8,106 


- 


-- 


-291 


- 


- 


+17,286 


40,246 


■^142 


2,593.90 


3.305 


-3,691 


2,677.70 


34.051 


-511 


49,373 


-I-127 


2,594.20 


3,342 


-t-37 


2,661.00 


26,220 


-7,831 


39,869 


-504 


2,607.10 


5,252 


+1,910 


2,657.70 


24,816 


-1,404 


39.618 


-251 


2,627.90 


9,995 


+4,743 


2,659.70 


25,661 


+845 


31,562 


-8,056 


2.653.20 


18,746 


+8,751 


2,677.00 


33,696 


+8,035 


37,708 


■f6,146 


2,648.50 


16,820 


-1,926 


2,673.80 


32,105 


-1,591 


35,213 


-2,495 


2,654.60 


19,348 


+2,528 


2,675.00 


32,696 


+591 


36,685 


-I- 1,472 


2,643.90 


15,077 


-4,271 


2.667.00 


28,891 


-3.805 


39,120 


■k2,435 


2,643.90 


15,077 





2,660.60 


26,047 


-2.844 


,- 


+741 


.. 


— 


+2,327 


.. 


- 


+1.771 



68 



SACRAMENTO RIVER BASIN 
1 1362500 PIT RIVER BELOW PIT NO. 4 DAM, CA 



LOCATION.--Lat 40''58'25". long 121°46'42", unsurveyed. T.36 N., R.2 E.. Shasta County. Hydrologic Unit 18020003. Shasta National Forest, 
on right bank 0.6 mi downstream from Ruling Creek, 1.3 mi downstream from Pit No, 4 Dam, and 2.7 mi downstream from Pit No. 3 
Powerplant 

DRAINAGE AREA.--4.648 mi^, excluding Goose Lake basin. 

PERIOD OF RECORD. -May 1922 to current year. MontMy discharge only for some periods, published in WSP 131 5-A. Published as "near Pecks 
Bridge " April to October 1922. and as "at Lindsay Flat" November 1922 to June 1927. 

REVISED RECORDS.--WSP 843: I935(M). WSP 1315-A: I928(M). "WDR CA-75-4: Drainage area. 

GAGE. -Water-stage recorder. Elevation of gage is 2.358 ft above sea level, from river-profile map. Prior to November 1922, water-stage recorder 
at site at Pecks Bridge 7.4 mi upstream at different datum. November 1922 to June 20, 1927, at site at Lindsay Flat 1.8 mi upstream at different 
datum. June 20, 1927, to Sept. 5, 1990, at site 200 ft downstream at datum 0.15 ft lower. 

REMARKS. -Low flow completely regulated by small reservoirs and powerplants, total usable reservoir capacity, 253,000 acre-ft. Many diversions 
upstream from station; diversion to Pit No, 4 Powerplant began June 9. 1955. See schematic diagram of Pit and McCloud River basins. 

COOPERATION— Records were collected by Pacific Gas & Electric Co., under general supervision of the US Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 33,700 ft'/s, Feb. 20, 1986, gage height. 18.70 ft; minimum daily, prior to 

diversion to Pit No. 4 Powerplant in 1955, 234 ft^/s, Sept. 13, 1953. Minimum daily, since diversion to Pit No. 4 Powerplant, 22 ft^/s, Dec. 2-4, 
1969. 

DISCHARGE. CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



NOV 



DEC 



JAN 



FEB 



MAR 



APR 



MAY 



JUN 



JUL 



1 


162 


166 


164 


14500 


5450 


160 


163 


168 


178 


162 


163 


164 


2 


169 


159 


164 


18600 


5680 


163 


164 


162 


163 


161 


162 


164 


3 


165 


163 


161 


19400 


5700 


161 


163 


161 


160 


160 


160 


164 


4 


161 


162 


163 


23800 


5430 


159 


165 


160 


162 


160 


160 


162 


5 


162 


162 


161 


19500 


4220 


164 


165 


160 


163 


161 


160 


167 


6 


168 


162 


161 


13800 


3500 


161 


165 


160 


161 


161 


161 


169 


7 


165 


162 


160 


9300 


2590 


159 


163 


160 


160 


161 


164 


180 


8 


162 


163 


166 


6000 


1850 


160 


162 


160 


159 


160 


166 


177 


9 


160 


162 


165 


4970 


1740 


160 


162 


160 


160 


160 


166 


162 


10 


158 


163 


167 


3550 


1600 


162 


161 


160 


161 


162 


165 


160 


11 


164 


164 


166 


2580 


1400 


162 


162 


161 


163 


161 


162 


164 


12 


161 


163 


2030 


2120 


1400 


161 


163 


164 


162 


161 


160 


173 


13 


160 


160 


2250 


1300 


1440 


160 


163 


162 


163 


161 


160 


182 


14 


160 


162 


1680 


578 


1350 


167 


162 


162 


163 


162 


164 


182 


15 


160 


168 


882 


164 


1110 


170 


161 


163 


163 


162 


164 


160 


16 


160 


168 


161 


160 


1040 


169 


160 


163 


162 


162 


164 


165 


17 


161 


167 


159 


158 


822 


168 


162 


161 


161 


162 


167 


163 


18 


164 


165 


161 


158 


919 


165 


163 


161 


161 


164 


166 


162 


19 


165 


167 


157 


159 


901 


164 


164 


161 


160 


164 


166 


163 


20 


164 


161 


159 


861 


1090 


390 


161 


161 


160 


161 


165 


162 


21 


162 


160 


158 


541 


758 


646 


162 


161 


160 


159 


164 


162 


22 


161 


160 


157 


1410 


171 


470 


163 


160 


160 


160 


166 


182 


23 


160 


160 


158 


1820 


163 


266 


162 


163 


160 


160 


166 


187 


24 


164 


159 


160 


868 


171 


264 


159 


163 


160 


161 


165 


186 


25 


163 


159 


159 


633 


256 


252 


891 


160 


163 


160 


163 


182 


26 


161 


159 


164 


323 


163 


201 


503 


160 


166 


162 


162 


189 


27 


160 


159 


167 


1480 


160 


161 


551 


160 


160 


167 


162 


189 


28 


160 


160 


164 


3040 


158 


164 


356 


160 


162 


164 


163 


178 


29 


162 


161 


401 


4370 





161 


162 


160 


160 


164 


163 


172 


30 


169 


163 


1550 


4790 





163 


163 


159 


161 


164 


162 


167 


31 


168 





8890 


4950 





163 





163 


--- 


160 


164 


— 


TOTAL 


5041 


4869 


21565 


165883 


51232 


6396 


6526 


4999 


4857 


5009 


5065 


5139 


MEAN 


163 


162 


696 


5351 


1830 


206 


218 


161 


162 


162 


163 


171 


MAX 


169 


168 


8890 


23800 


5700 


646 


891 


168 


178 


167 


167 


189 


MIN 


158 


159 


157 


158 


158 


159 


159 


159 


159 


159 


160 


160 


AC -FT 


10000 


9660 


42770 


329000 


101600 


12690 


12940 


9920 


9630 


9940 


10050 


10190 


a 


104900 


119600 


157100 


179600 


162300 


177400 


156600 


131800 


109300 


103400 


95330 


97670 


b 


127700 


139900 


196500 


235500 


219700 


229700 


198800 


162400 


131800 


126100 


115000 


114400 



a Discharge, in acre-feet, for Pit No. 3 Powerplant (station 1 1362300), provided by Pacific Gas & Electric Co. 
b Diversion, in acre-feet, to Pit No. 4 Powerplant (station 1 1362600). provided by Pacific Gas & Electric Co. 



SACRAMENTO RIVER BASIN 
1 1362500 PIT RIVER BELOW PIT NO. 4 DAM, CA— Continued 



69 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1927 - 1954, BY WATER YEAR (WY) 



OCT 



NOV 



DEC 



APR 



SUMMARY STATISTICS 

ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC-FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



WATER YEARS 1927 - 1954 



2572 








4066 






1952 


1703 






1934 


26200 


Dec 


12 


1937 


234 


Sep 


13 


1953 


1450 


Aug 


2 


1936 


a30200 


Dec 


12 


1937 


17.90 


Dec 


12 


1937 


.863000 








3810 








2170 








1630 









From rating curve extended above 12,000 ft /s on basis of velocity-area studies. 



AUG 



MEAN 


1945 


2102 


2458 


2700 


3338 


3799 


3766 


2877 


2307 


1925 


1833 


1865 


MAX 


2385 


2544 


5968 


5523 


6872 


8510 


11400 


5507 


4096 


2652 


2146 


2318 


(WY) 


1954 


1954 


1938 


1953 


1942 


1938 


1952 


1938 


1953 


1952 


1954 


1953 


MIN 


1571 


1666 


1745 


1698 


1742 


1895 


1730 


1635 


1612 


1569 


1509 


1541 


(WY) 


1935 


1934 


1935 


1937 


1933 


1934 


1934 


1934 


1934 


1934 


1934 


1934 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1955 - 1997, BY WATER YEAR (WY) 



OCT 



DEC 



JAN 



AUG 



MEAN 


235 


222 


426 


1006 


1062 


1163 


789 


494 


219 


163 


163 


159 


MAX 


2189 


2436 


3791 


7250 


7657 


5545 


3416 


4770 


1479 


490 


458 


268 


(WY) 


1955 


1955 


1965 


1970 


1986 


1995 


1982 


1995 


1955 


1955 


1992 


1973 


HIN 


96.8 


66.4 


49.8 


50.0 


49.0 


49.7 


88.3 


128 


128 


137 


120 


79.8 


(WY) 


1962 


1957 


1979 


1981 


1981 


1981 


1961 


1961 


1961 


1964 


1955 


1955 



SUMMARY STATISTICS 

ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC-FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



FOR 199 6 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1955 - 1997 



258326 






286581 










706 






785 






506 
1868 
98.4 


1955 
1961 


10400 


Feb 


22 


23800 


Jan 


4 


31100 


Feb 20 1986 


157 


Jan 


1 


157 


Dec 


19 


22 


Dec 2 1969 


158 


Dec 


19 


158 


Dec 


19 


27 


Dec 1 1969 








25500 


Jan 


4 


33700 


Feb 20 1986 








16.65 


Jan 


4 


18.70 


Feb 20 1986 


512400 






568400 






366700 




2040 






1400 






1140 




164 






163 






156 




160 






160 






59 





70 



SACRAMENTO RTVER BASIN 
1 1362900 NELSON CREEK BELOW DIVERSION TO NELSON CREEK POWERPLANT, NEAR BIG BEND, CA 



LOCATION.-Lat 4r02'32", long 12r52'34". in NE 1/4 NE 1/4 sec.29, T.37 N., R.l E., Shasta County, Hydrologic Unit 18020003. on right bank 
400 ft upstream from Snowslide Creek, 0.3 mi downstream from Bull Creek, and 2.3 mi northeast of Big Bend. 

DRAINAGE AREA.-- 13.2 mi". 

PERIOD OF RECORD.-October 1993 to September 1996. October 1996 to September 1997 (operated as a low- flow station only). 

GAGE.-Water-stage recorder and broad-crested weir; water-stage recorder and sharp-crested weir. Elevation of gages is 2,320 ft above sea level, 
from topographic map. 

REMARKS— Records fair. Flow at this station has two components which are combined for publication: flow over a broad-crested weir (station 
1 1 362880) and flow over a sharp-crested weir (station 1 1 362890). Water is diverted upstream of weirs through a tunnel to Nelson Creek 
Powerplant (station 1 1362800), returning to Nelson Creek at its confluence with the Pit River. Row is computed to 100 ft-'/s. See schematic 
diagram of Pit and McCloud River basins. 

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 623 ft^/s, Feb. 19, 1996; minimum daily, 7.4 ft'/s, Sept. 8, 21 , 22, 1994. 

DISCHARGE. CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 

DAY OCT NOV DEC JAN FEB MAR APR MAY JtW JUL AUG SEP 



1 


14 


13 


el6 








57 


23 


16 


16 


15 


14 





2 


14 


13 


el6 








63 


47 


16 


16 


15 


14 





3 


14 


13 


el6 





85 


56 


23 


15 


16 


15 


14 





4 


14 


13 


el7 





80 


54 


19 


15 


19 


17 


14 





5 


14 


13 


el7 





76 


51 


18 


15 


15 


17 


14 





6 


14 


13 


el5 





73 


52 


17 


15 


15 


17 


14 





7 


14 


13 








68 


45 


18 


15 


16 


17 


14 





8 


14 


12 








64 


43 


17 


16 


16 


17 


14 





9 


14 


12 








61 


39 


16 


16 


17 


17 


13 





10 


14 


12 








59 


37 


15 


16 


18 


16 


13 


— - 


11 


14 


12 








56 


36 


15 


16 


18 


16 


13 





12 


14 


12 





80 


52 


33 


15 


16 


18 


16 


13 





13 


14 


12 








49 


31 


15 


16 


18 


16 


13 


12 


14 


14 


12 


87 


68 


46 


30 


15 


16 


17 


16 


13 


15 


15 


14 


12 


38 


62 


45 


30 


15 


16 


17 


16 


13 


17 


16 


14 


13 


29 


58 


43 


45 


15 


16 


17 


16 


13 


14 


17 


14 


19 


21 


53 


46 


67 


15 


16 


17 


16 


13 


12 


18 


14 


83 


22 


47 


43 


57 


22 


16 


17 


16 


13 


13 


19 


14 


52 


16 


42 


41 


54 


43 


16 


17 


15 


13 


14 


20 


14 


60 


16 


40 


40 


54 


65 


17 


17 


15 


18 


14 


21 


14 


e30 


15 


45 


38 


51 


62 


16 


17 


15 


14 


15 


22 


14 


e54 


15 


45 


35 


50 


56 


16 


17 


15 


14 


15 


23 


14 


el8 


15 


30 


33 


47 


56 


15 


16 


15 


13 


15 


24 


el4 


el6 


15 


24 


32 


43 


41 


16 


16 


15 


13 


15 


25 


el3 


el6 


15 


66 


46 


40 


25 


16 


16 


15 





15 


26 


13 


el6 


15 





60 


36 


16 


16 


15 


15 





15 


27 


13 


el6 








59 


32 


16 


16 


15 


15 





15 


28 


13 


el6 








59 


28 


15 


16 


15 


14 





14 


29 


15 


el6 











26 


15 


16 


15 


14 





14 


30 


14 


el6 











27 


16 


16 


15 


14 





14 


31 


13 











— - 


28 


--- 


16 


- — 


14 


- — 


— 


TOTAL 


430 


628 











1342 


766 


491 


494 


482 








MEAN 


13.9 


20.9 











43.3 


25.5 


15.8 


16.5 


15.5 








MAX 


15 


83 











67 


65 


17 


19 


17 








MIN 


13 


12 











26 


15 


15 


15 


14 








AC -FT 


853 


1250 











2660 


1520 


974 


980 


956 








a 


4.0 


629 


1670 


1960 


2830 


3140 


2300 


1140 


320 


14 





11 



NOTE: Weirs were out of service Aug. 25 to Sept. 12 and all flow remained in the natural channel. 

e Estimated. 

a Discharge, in acre-feet, for Nelson Creek Powerplant (station 1 1362800), provided by Sierra Pacific Industries. 



SACRAMENTO RIVER BASIN 
1 1362950 EAST FORK NELSON CREEK BELOW DIVERSION TO NELSON CREEK, NEAR BIG BEND. CA 



71 



LOCATION.--Lat 41°02'25", long 12r52'28". in NE 1/4 NE 1/4 sec.29, T.37 N., R.l E., Shasta County, Hydrologic Unit 18020003, on right bank 
700 ft upstream from Nelson Creek, and 2.3 mi northeast of Big Bend. 

DRAINAGE AREA.--8.18 mi^. 

PERIOD OF RECORD.-October 1993 to September 1996. October 1996 to September 1997 (operated as a low-flow station only). 

GAGE.--Water-stage recorder and broad-crested weir; water-stage recorder and sharp-crested weir. Elevation of gages is 2,360 ft above sea level, 

from topographic map. 
REMARKS. -Records good. Flow at this station has two components which are combined for publication: flow over a broad-crested weir (station 

1 1 362940) and flow over a sharp-crested weir (station 1 1 362945). Water is diverted upstream of weirs through a pipe to Nelson Creek (station 

1 1362900). Flows computed to 22 ft^/s. See schematic diagram of Pit and McCloud River basins. 
EXTREMES FOR PERIOD OF RECORD. -Maximum discharge, 267 ft^/s. Mar. 15, 1995; minimum daily, 0.07 ft^/s, Aug. 12 to Sept. 23, 1994 

and Oct. 11. 1994. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 

NOV DEC JAN FEB MAR APR MAY Jt»I JUL AUG SEP 



DAY 



OCT 



1 


1.8 


2.3 


3.0 


2 


1.8 


2.3 


2.9 


3 


2.1 


2.3 


2.9 


i 


2.2 


2.3 


3.0 


5 


2.2 


2.3 


3.8 


6 


2.2 


2.3 


3.7 


7 


2.2 


2.3 


6.4 


8 


2.2 


2.2 


15 


9. 


2.2 


2.2 





10 


2.1 


2.2 





11 


2.2 


2.2 





12 


2.2 


2.2 





13 


2.3 


2.2 


21 


14 


2.3 


2.2 


17 


15 


2.3 


2.2 


15 


16 


2.3 


2.2 


13 


17 


2.3 


3.0 


11 


18 


2.4 


10 


9.5 


19 


2.4 


8.2 


8.5 


20 


2.4 


10 


8.1 


21 


2.3 


6.2 


7.8 


22 


2.3 


9.2 


7.7 


23 


2.4 


5.2 


7.1 


24 


2.7 


4.4 


6.3 


25 


2.5 


3.9 


6.1 


26 


2.4 


3.5 


6.8 


27 


2.3 


3.2 


12 


28 


2.3 


3.2 





29 


2.9 


3.0 





30 


2.6 


3.0 





31 


2.4 








TOTAL 


71.2 


111.9 





MEAN 


2.30 


3.73 





MAX 


2.9 


10 





MIN 


1.8 


2.2 





AC -FT 


141 


222 





e Estimated. 










9.2 


e6.4 


3.7 


3.2 





9.0 


e6.2 


3.6 


3.2 





9.7 


e6.1 


3.7 


3.4 





10 


6.1 


3.6 


3.3 


11 


e9.4 


6.0 


3.4 


3.2 


11 


e9.3 


6.0 


3.3 


3.2 


11 


e9.1 


5.6 


3.4 


3.1 


11 


e8.9 


5.4 


3.4 


3.0 


11 


e8.6 


5.3 


3.4 


3.0 


11 


8.5 


5.3 


3.5 


3.0 


11 


8.5 


5.4 


3.6 


3.0 


11 


8.2 


5.3 


3.4 


g3.0 


11 


8.1 


5.2 


3.2 


e3.0 


11 


7.9 


5.0 


3.2 


e3.6 


11 


7.6 


4.5 


3.2 


e4.0 


11 


7.5 


4.5 


3.3 


e3.5 


11 


7.4 


4.5 


3.3 


e3.5 


11 


7.3 


4.4 


3.3 


3.3 


11 


7.3 


4.3 


3.2 


3.2 


11 


7.2 


4.3 


4.6 


3.1 


11 


7.1 


4.3 


3.8 


3.0 


11 


7.0 


4.1 


3.6 


3.0 


11 


6.8 


4.0 


3.4 


3.0 


11 


6.8 


4.0 


3.4 


3.0 


11 


6.7 


4.0 


3.4 


3.0 


11 


6.5 


4.0 


3.2 


3.0 


10 


6.1 


4.0 


3.3 


2.9 


9.9 


6.1 


4.0 


3.3 


2.8 


9.6 


6.1 


4.0 


3.3 


2.8 


9.5 


6.5 


4.0 


3.3 


2.8 


9.4 





3.9 


3.3 





... 


234.4 


150.1 


106.6 


94.1 





7.81 


4.84 


3.44 


3.14 





10 


6.4 


4.6 


4.0 





6.1 


3.9 


3.2 


2.8 





465 


298 


211 


187 



NOTE: Discharges above 22 ftVs Dec. 9-12 and Dec. 28 to Jan. 1. Gage out of service Jan. 2 to May 4 and all flow 



remained in the natural channel . 



72 



SACRAMENTO RIVER BASIN 
1 1363000 PIT RIVER AT BIG BEND. CA 



LOCATION.--Ut 41''0r lO". long 121°54'36", in NW 1/4 SW 1/4 sec.31, T.37 N., R.l E.. Shasta County, Hydrologic Unit 18020003, on left bank 
at Big Bend, 0.4 mi downstream from Nelson Creek, 1.5 mi upstream bom Kosk Creek, and 3.1 mi downstream from Pit No. 5 Dam. 

DRAINAGE AREA. --4,71 1 mi', excluding Goose Lake basin. 

PERIOD OF RECORD.-October 1910 to current year. Monthly discharge only for some periods, published in WSP 1315-A. Published as "at 
Henderson" 1910-23. 

REVISED RECORDS.-WSP 1345: 191 1, 1914(M), 1916(M), 1917, 1928, 1935-36(M). WDR CA-75-4: Drainage area. 

GAGE.-Water-stage recorder. Datum of gage is 1,674.47 ft above sea level. Prior to Dec. 28, 1912, nonrecording gage; Dec. 28, 1912, to June 21, 
1924, water-stage recorder at same site, at datura 7.69 ft higher. June 22. 1924, to Sept. 30, 1988, at site 200 ft downstream at same datum. 

REMARKS. -Low flow completely regulated by many reservoirs and powerplants, total usable reservoir capacity, about 253,000 acre-ft. Many 
diversions upstream from station; diversion to Pit No. 5 Powerplant (station 1 1362700) began May 1. 1944. See schematic diagram of Pit and 
McCloud River basins 

COOPERATION— Records were collected by Pacific Gas & Electric Co.. under general supervision of the U.S. Geological Survey, in connection 

with a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 49,000 ft'/s, Jan. 25. 1970, gage height, 18.17 ft in gage well, 19.0 ft from 
floodmarks. site then in use, from rating curve extended above 17,000 ft^/s; maximum gage height, 18.70 ft. Feb. 20. 1986. site then in use; 
minimum daily. 692 ft^/s. July 9. 1925; since diversion to Pit No. 5 Powerplant. minimum daily. 34 ftVs. Mar. 29. 1955. 

EXTREMES FOR CURRENT YEAR. -Peak discharges greater than base discharge of 6.000 ft'/s, or maximum: 

Discharge Gage height Discharge Gage height 

Date Time (ft^/s) (ft) Date Time (ft^/s) (ft) 



Jan 4 



0300 



41,200 



18.36 



Jan 22 



2130 



7.670 



11.53 



DISCHARGE. CUBIC FEET PER SECOND. WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



DAY 



OCT 



NOV 



DEC 



JAN 



MAR 



APR 



HAY 



JUN 



JUL 



1 


143 


146 


146 


21100 


3990 


268 


223 


210 


170 


149 


144 


146 


2 


141 


146 


143 


27700 


4220 


295 


219 


205 


177 


148 


144 


146 


3 


146 


145 


153 


26000 


4170 


274 


219 


203 


179 


150 


148 


146 


4 


143 


145 


157 


30200 


4150 


260 


219 


200 


184 


150 


143 


144 


5 


144 


141 


177 


23400 


3200 


256 


217 


196 


170 


148 


145 


145 


6 


148 


144 


172 


17000 


2610 


254 


214 


195 


168 


153 


143 


142 


7 


143 


144 


239 


11600 


1920 


251 


212 


194 


169 


150 


144 


149 


8 


143 


148 


366 


8080 


1330 


245 


212 


193 


168 


145 


149 


144 


9 


152 


151 


497 


7120 


1100 


244 


212 


188 


168 


146 


142 


140 


10 


148 


142 


623 


5280 


983 


243 


211 


176 


159 


145 


143 


147 


11 


147 


140 


1290 


4270 


861 


239 


208 


178 


159 


146 


141 


155 


12 


154 


147 


2510 


2630 


866 


240 


197 


186 


154 


146 


140 


149 


13 


157 


146 


2970 


1690 


831 


236 


198 


185 


153 


146 


141 


148 


14 


160 


149 


2130 


949 


822 


229 


201 


177 


148 


147 


137 


167 


15 


157 


154 


1330 


414 


646 


241 


206 


174 


138 


147 


138 


157 


16 


156 


161 


365 


389 


621 


263 


204 


174 


143 


143 


143 


148 


17 


152 


170 


248 


377 


493 


295 


198 


176 


148 


145 


147 


150 


18 


146 


341 


242 


361 


566 


264 


213 


172 


147 


148 


144 


151 


19 


147 


280 


228 


344 


539 


255 


228 


175 


149 


144 


145 


146 


20 


142 


305 


218 


715 


643 


375 


259 


178 


147 


148 


153 


144 


21 


148 


214 


216 


870 


497 


658 


270 


176 


145 


142 


148 


143 


22 


147 


287 


219 


1430 


337 


563 


260 


170 


142 


148 


141 


146 


23 


147 


195 


227 


2170 


317 


390 


258 


180 


148 


143 


141 


156 


24 


153 


190 


213 


1000 


316 


305 


242 


174 


146 


142 


147 


146 


25 


150 


165 


204 


990 


321 


357 


825 


167 


145 


144 


147 


162 


26 


147 


156 


222 


1200 


296 


328 


474 


175 


145 


141 


146 


146 


27 


145 


161 


338 


1690 


282 


254 


451 


173 


141 


142 


145 


148 


28 


145 


157 


865 


2630 


271 


239 


428 


173 


138 


141 


144 


139 


29 


158 


147 


2130 


2920 





236 


228 


173 


139 


145 


139 


148 


30 


145 


141 


3790 


3270 





229 


223 


175 


145 


142 


141 


138 


31 


149 





12600 


3660 





227 





168 


— - 


142 


144 


--- 


TOTAL 


4603 


5258 


35228 


211449 


37198 


9013 


7929 


5639 


4632 


4516 


4457 


4436 


MEAN 


148 


175 


1136 


6821 


1329 


291 


264 


182 


154 


146 


144 


148 


MAX 


160 


341 


12600 


30200 


4220 


658 


825 


210 


184 


153 


153 


167 


MIN 


141 


140 


143 


344 


271 


227 


197 


167 


138 


141 


137 


138 


AC -FT 


9130 


10430 


69870 


419400 


73780 


17880 


15730 


11180 


9190 


8960 


8840 


8800 



SACRAMENTO RTVER BASIN 
1 1363000 PIT RIVER AT BIG BEND, CA— Continued 

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1911 - 1943, BY WATER YEAR (WY) 



OCT 



DEC 



JAN 



AUG 



73 



SEP 



MEAN 


2206 


2373 


2676 


3000 


3927 


4449 


4446 


3229 


2520 


2214 


2100 


2107 


MAX 


3021 


3186 


6792 


7675 


7989 


9953 


11410 


6216 


3763 


3218 


2987 


2975 


(WY) 


1912 


1912 


1938 


1914 


1942 


1938 


1917 


1938 


1911 


1911 


1911 


1911 


MIN 


1607 


1740 


1764 


1750 


1746 


2051 


1860 


1734 


1672 


1584 


1526 


1565 


(WY) 


1935 


1934 


1935 


1937 


1933 


1931 


1934 


1934 


1934 


1934 


1934 


1934 



SUMMARY STATISTICS WATER YEARS 1911 - 1943 

ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC -FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 

a From rating extended above 11,000 ft'^/s on basis of velocity-area studies. 



2931 








4597 






1938 


1787 






1934 


30300 


Dec 


12 


1937 


692 


Jul 


9 


1925 


915 


Jul 


4 


1925 


a34200 


Dec 


12 


1937 


16.26 


Dec 


12 


1937 


2123000 








4520 








2440 








1750 









STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1944 - 1997, BY WATER YEAR (WY) 

OCT NOV DEC JAN FEB MAR APR MAY JUN 



MEAN 


207 


212 


495 


1067 


1206 


1395 


1114 


617 


239 


132 


131 


124 


MAX 


2322 


2469 


3889 


8804 


9457 


6658 


8441 


5420 


1656 


175 


448 


284 


(WY) 


1944 


1944 


1965 


1970 


1986 


1995 


1952 


1995 


1971 


1996 


1992 


1986 


MIN 


58.8 


56.0 


45.0 


51.4 


57.1 


52.6 


49.9 


114 


78.5 


63.5 


60.9 


60.1 


(WY) 


1949 


1979 


1979 


1949 


1977 


1977 


1977 


1977 


1944 


1944 


1944 


1945 



SUMMARY STATISTICS 

ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC-FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



FOR 199 6 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1944 - 1997 



334964 






334358 










915 






916 






575 
1638 
86.5 


1995 
1977 


12600 


Dec 


31 


30200 


Jan 


4 


36500 


Feb 21 1986 


140 


Nov 


11 


137 


Aug 


14 


34 


Mar 29 1955 


143 


Sep 


25 


140 


Aug 


9 


40 


Dec 7 1978 








41200 


Jan 


4 


49000 


Jan 25 1970 








18.36 


Jan 


4 


18.17 


Jan 25 1970 


664400 






663200 






416800 




2520 






1240 






1510 




206 






173 






138 




145 






143 






74 





74 



SACRAMENTO RIVER BASIN 
1 1363910 JAMES B. BLACK POWERPLANT NEAR BIG BEND, CA 



LOCATION.-Lat 40°59' 12", long 121°58'35', in SW 1/4 SE 1/4 sec.9. T.36 N., R.l W., Shasta County, Hydrologic Unit 18020003, at poweiplant 
on right bank of Pit River, 5.8 mi downstream from Big Bend. 

PERIOD OF RECORD-December 1965 to current year. 

GAGE. --Discharge computed from powerplant output. 

REMARKS. -Water is diverted from Lake McCloud (station 11367740) at SE 1/4 SW 1/4 sec.22, T.38 N , R.2 W.. through McCloud-Iron Canyon 
Diversion Tunnel (station 1 1367720) to Iron Canyon Reservoir (station 1 1363920), then through the penstock for powerplant and into the Pit 
River. Records are combmed flow of diversion from McCloud River at McCloud Dam plus Iron Canyon Creek. See schematic diagram of Pit 
and McCloud River ba.sins. 

COOPERATION— Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD.-Maximum daily discharge, 2,420 ft^/s, July 15. 1966; no flow several days most years. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 

DAY OCT NOV DEC JAN FEB MAR APR MAY JVN JUL AUG SEP 



1 


839 


773 


1040 


758 




1160 


1380 


1110 


631 


645 


770 


873 


851 


2 


555 


666 


948 




00 


1250 


1340 


1180 


749 


1140 


1130 


650 


637 


3 


658 


573 


1240 


1080 




1430 


1100 


1110 


444 


604 


1210 


836 


1380 


4 


815 


765 


1050 


1140 




1760 


1360 


1270 


1110 


1380 


404 


883 


1260 


5 


602 


518 


941 


1190 




1450 


1200 


1170 


1070 


1470 


57 


950 


1160 


6 


665 


824 


1420 


1070 




1450 


1350 


1020 


942 


1430 


127 


937 


1020 


7 


864 


636 


1300 


1140 




1570 


1010 


1000 


1070 


891 


998 


954 


874 


8 


709 


1020 


1580 


1280 




1410 


853 


1320 


663 


526 


924 


519 


812 


9 


1040 


592 


1350 


1420 




1480 


1170 


944 


392 


1040 


804 


574 


920 


10 


1020 


394 


1650 


1490 




1400 


1200 


1130 


477 


762 


592 


594 


944 


11 


738 


1060 


1910 


1470 




1510 


710 


842 


40 


1130 


873 


858 


1470 


12 


542 


664 


1430 


1390 




1500 


1100 


1200 


214 


766 


423 


947 


713 


13 


779 


599 


1850 


1400 




1270 


947 


1240 


562 


1090 


625 


728 


37 


14 


653 


793 


1500 


990 




1390 


1370 


1080 


776 


955 


1040 


1150 


45 


15 


773 


645 


1700 


923 




1570 


1180 


604 


899 


527 


1020 


1070 


700 


16 


556 


657 


1350 


944 




1370 


895 


821 


503 


1060 


987 


1060 


893 


17 


801 


868 


1590 


1260 




1450 


1110 


683 


234 


890 


595 


798 


654 


18 


728 


688 


1180 


1420 




1070 


1030 


1240 


294 


789 


864 


934 


555 


19 


450 


1480 


1250 


1780 




1520 


1240 


708 


644 


1050 


605 


1060 


1110 


20 


692 


1730 


1670 


1430 




1620 


942 


1170 


1120 


898 


642 


925 


253 


21 


803 


1660 


1550 


1640 




1320 


1160 


1100 


848 


541 


1030 


787 


612 


22 


818 


1200 


1300 


1630 




1280 


1100 


881 


535 


756 


565 


1170 


893 


23 


560 


1470 


1550 


1900 




1410 


1100 


1260 


623 


888 


776 


1270 


851 


24 


670 


886 


1360 


1910 




1440 


1080 


731 


1280 


898 


886 


706 


1010 


25 


712 


1030 


1320 


1530 




1340 


813 


738 


763 


922 


1020 


943 


698 


26 


797 


1650 


1490 


1650 




1330 


1100 


940 


968 


967 


335 


841 


317 


27 


844 


1080 


1310 


1760 




1370 


1290 


943 


652 


1050 


457 


857 


.00 


28 


719 


924 


1550 


1500 




1290 


1570 


1170 


771 


638 


674 


878 


634 


29 


634 


1320 


1800 


1530 







1460 


703 


894 


932 


710 


1020 


1260 


30 


604 


926 


1900 


1460 







1210 


675 


987 


825 


979 


349 


601 


31 


676 





1810 


1570 







1060 





627 





907 


872 


... 


TOTAL 


22316 


28091 


44889 


41655. 


00 


39410 


35430 


29983 


21782 


27460 


23029 


26993 


23164.00 


MEAN 


720 


936 


1448 


1344 


1408 


1143 


999 


703 


915 


743 


871 


772 


MAX 


1040 


1730 


1910 


1910 


1760 


1570 


1320 


1280 


1470 


1210 


1270 


1470 


MIN 


450 


394 


941 




00 


1070 


710 


604 


40 


526 


57 


349 


.00 


AC -FT 


44260 


55720 


89040 


82620 


78170 


70280 


59470 


43200 


54470 


45680 


53540 


45950 


a 


143500 


153500 


213400 


213100 


228600 


244500 


213000 


179900 


147900 


137500 


127300 


127500 



a Discharge, in acre-feet, for Pit No. 5 Powerplant (station 1 1362700), provided by Pacific Gas & Electric Co. 



SACRAMENTO RIVER BASIN 
11363910 JAMES B. BLACK POWERPLANT NEAR BIG BEND, CA— Continued 



75 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1966 - 1997, BY WATER YEAR (WY) 



JUL 



MEAN 


737 


743 


884 


961 


1016 


1162 


1137 


996 


879 


826 


803 


776 


MAX 


1122 


1401 


1538 


1651 


1533 


1566 


1670 


1797 


1735 


1260 


1101 


1225 


(WY) 


1976 


1974 


1974 


1970 


1970 


1995 


1966 


1967 


1967 


1966 


1983 


1983 


MIN 


505 


428 


433 


500 


373 


581 


421 


368 


523 


533 


465 


515 


(WY) 


1993 


1992 


1992 


1992 


1978 


1991 


1990 


1977 


1987 


1994 


1992 


1992 



SUMMARY STATISTICS 

ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
ANNUAL RUNOFF (AC-FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1966 



392493.00 






364202.00 














1072 






998 






906 

1313 

547 






1974 
1991 


1960 


May 


18 


1910 


Dec 


11 


2420 


Jul 


15 


1966 


.00 


Jul 


11 


.00 


Jan 


2 


.00 


Jun 


2 


1966 


512 


Jul 


10 


446 


May 


8 


.00 


Feb 


3 


1971 


778500 






722400 






656200 








1560 






1490 






1490 








1060 






954 






873 








592 






570 






389 









76 



SACRAMENTO RIVER BASIN 
11 363930 IRON CANYON CREEK BELOW IRON CANYON DAM, NEAR BIG BEND, CA 



LOCATION.--Lat 4r02'22", long 121°59'03", in NW 1/4 NW 1/4 sec.28. T.37 N., R.l W., Shasta County, Hydrologic Unit 18020003, on left 
bank 0.2 mi downstream from Iron Canyon Dam and 4.2 mi west of Big Bend. 

DRAINAGE AREA.- 1 1.2 mi^. 

PERIOD OF RECORD.-August 1966 to current year (beginning October 1994, operated as a low-flow station only). 

REVISED RECORDS.--WDR CA-95-4. Drainage area, 

GAGE.-Water-stage recorder, 60° sharp-crested V-notch weir, and concrete control with flashboards in 2- x 10-ft opening Datum of gage is 
2,461.52 ft above sea level (levels by Pacific Gas & Electric Co.). 

REMARKS— Flow is completely regulated by Iron Canyon Reservoir (station 1 1363920). There is an interbasin diversion from Lake McCloud 
(station 1 1 367740) to Iron Canyon Reservoir and then through a tunnel to James B. Black Powerplant on the Pit River (station 1 1 363910). This 
station records fishwater release only. The minimum release requirement is 3.0 ft^'/s at all times. Flow is computed to 12.0 ft^/s. See schematic 
diagram of Pit and McCloud River basins. 

COOPERATION— Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge. 650 ft^/s, Feb. 5, 1986, gage height unknown (flashboards removed from weir), 
from equation for a 4 by 4-ft slide gate. Flow was the result of full travel test of slide gate at Iron Canyon Dam; maximum gage height, 3.24 ft, 
Feb. 25, 1978 (dashboards in weir), was the result of failure of the James B Black Penstock; no flow. July 15-18. 1967. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



NOV 



DEC 



JAN 



FEB 



MAR 



APR 



MAY 



JUN 



JUL 



1 


3.5 


3.6 


3.5 





4.0 


4.1 


3.5 


4.1 


4.6 


3.8 


3.6 


4.0 


2 


3.5 


3.6 


3.5 





4.0 


4.3 


3.4 


4.1 


4.6 


3.6 


3.6 


4.0 


3 


3.5 


3.6 


3.5 





4.1 


4.2 


3.4 


4.2 


4.6 


3.5 


3.6 


3.9 


4 


3.5 


3.6 








3.8 


4.2 


3.4 


4.2 


4.6 


3.4 


3.6 


3.8 


5 


3.5 


3.6 


4.1 





3.5 


4.3 


3.4 


4.2 


4.3 


3.4 


3.6 


3.7 


6 


3.5 


3.7 


3.6 





3.7 


4.1 


3.5 


4.2 


3.8 


3.5 


3.6 


3.7 


7 


3.5 


3.6 


4.0 


11 


4.1 


4.2 


3.4 


4.1 


3.6 


3.6 


3.5 


3.6 


8 


3.5 


3.6 


4.2 


10 


4.1 


4.5 


3.4 


4.2 


3.6 


3.6 


3.5 


3.7 


9 


3.5 


3.6 


6.5 


9.6 


4.0 


4.6 


3.4 


4.3 


3.6 


3.6 


3.5 


3.7 


10 


3.5 


3.6 


7.3 


9.1 


3.8 


4.5 


3.8 


4.4 


3.6 


3.6 


3.6 


3.6 


11 


3.4 


3.6 


5.1 


8.6 


3.9 


4.6 


3.8 


4.4 


3.6 


3.6 


3.6 


3.5 


12 


3.4 


3.6 


4.5 


8.0 


3.8 


4.4 


3.4 


4.5 


3.6 


3.6 


3.6 


3.5 


13 


3.5 


3.6 


5.3 


7.6 


3.7 


4.0 


3.4 


4.5 


3.6 


3.6 


3.6 


3.6 


14 


3.5 


3.6 


4.0 


7.6 


3.7 


3.6 


3.3 


4.5 


3.6 


3.6 


3.6 


3.8 


15 


3.5 


3.6 


3.6 


7.6 


3.7 


3.6 


3.4 


4.5 


3.6 


3.6 


3.9 


3.9 


16 


3.5 


3.6 


3.4 


7.6 


3.6 


3.7 


3.5 


4.5 


3.6 


3.6 


4.1 


3.9 


17 


3.6 


3.7 


3.2 


7.6 


3.7 


3.9 


3.6 


4.6 


3.6 


3.6 


4.1 


3.9 


18 


3.6 


e4.7 


3.6 


7.2 


3.7 


3.7 


3.8 


4.6 


3.6 


3.6 


4.1 


3.9 


19 


3.6 


6.2 


4.4 


6.9 


3.8 


3.7 


4.0 


4.6 


3.6 


3.6 


4.1 


3.9 


20 


3.6 


4.5 


4.2 


6.6 


3.6 


3.7 


4.1 


4.6 


3.6 


3.6 


4.1 


3.9 


21 


3.6 


3.9 


4.0 


6.3 


3.5 


3.7 


3.9 


4.6 


3.6 


3.6 


4.1 


3.9 


22 


3.6 





4.0 


6.1 


3.5 


3.6 


3.9 


4.6 


3.6 


3.6 


4.1 


3.9 


23 


3.6 


3.8 


4.0 


5.4 


3.5 


3.6 


3.9 


4.6 


3.6 


3.6 


4.0 


3.9 


24 


3.6 


3 .4 


4.0 


4.6 


3.4 


3.6 


3.8 


4.6 


3.6 


3.6 


3.9 


3.8 


25 


3.6 


3.3 


4.0 


4.6 


3.4 


3.7 


3.8 


4.6 


3.6 


3.6 


4.0 


3.8 


26 


3.6 


3.3 


4.0 


8.9 


3.8 


3.7 


3.7 


4.6 


3.6 


3.6 


3.9 


3.8 


27 


3.6 


3.2 


4.9 


7.0 


4.3 


3.8 


3.8 


4.6 


3.6 


3.6 


3.9 


3.9 


28 


3.5 


3.3 


7.9 


6.6 


4.2 


3.7 


3.9 


4.6 


3.6 


3.6 


3.9 


4.0 


29 


3.6 


3.5 





5.3 





3.5 


3.9 


4.6 


3.7 


3.6 


3.9 


4.0 


30 


3.6 


3.5 





4.3 





3.5 


4.0 


4.6 


3.7 


3.6 


3.9 


3.9 


31 


3.6 








4.0 





3.5 





4.6 





3.6 


3.9 





TOTAL 


109.7 











105.9 


121.8 


109.5 


137.9 


113.1 


111.2 


118.0 


114.4 


MEAN 


3.54 











3.78 


3.93 


3.65 


4.45 


3.77 


3.59 


3.81 


3.81 


MAX 


3.6 











4.3 


4.6 


4.1 


4.6 


4.6 


3.8 


4.1 


4.0 


MIN 


3.4 











3.4 


3.5 


3.3 


4.1 


3.6 


3.4 


3.5 


3.5 


AC -FT 


218 











210 


242 


217 


274 


224 


221 


234 


227 


e Est 


;imated. 

























SACRAMENTO RIVER BASIN 



77 



11 365000 PIT RIVER NEAR MONTGOMERY CREEK, CA 

LOCATION.--Lat 40°50'38". long 122°00'05", in NE 1/4 SW 1/4 sec.32, T.35 N., R.l W., Shasta County, Hydrologic Unit 18020003, Shasta 
National Forest, on left bank 0.7 mi downstream from Pit No. 7 Dam and Powerplant, 1.4 mi upstream from Potem Creek, and 4.1 mi west of 
town of Montgomery Creek. 

DRAINAGE AREA. --4,952 mi^, excluding Goose Lake basin. 

PERIOD OF RECORD.-October 1944 to cunent year (monthly discharge only December 1964 to May 1965). Monthly discharge only for some 
periods, published in WSP 1315-A. 

CHEMICAL DATA: Water years 1951, 1953, 1955-81. 

WATER TEMPERATURE: Water years 1951, 1954-57, 1959 . 

REVISED RECORDS.-WSP 1931: Drainage area. WDR CA-86-4: 1983 (M). 

GAGE— Water-stage recorder and crest-stage gage. Datum of gage is 1,000.00 ft above sea level (levels by Pacific Gas & Electric Co.). October 
1944 to Feb. 17, 1963, at site 0.7 mi upstream at different datum. Feb. 17, 1963, to May 21, 1965, at site 1.5 mi upstream at different datum. 
May 21, 1965, to June 20, 1981, at site 0.9 mi downstream at datum 1,036.00 ft above sea level. 

REMARKS. -Low flow completely regulated by many reservoirs and powerplants, total usable reservoir capacity, 337,000 acre-ft. Many diversions 

upstream from station for irrigation. Diversion from McCloud River to Iron Canyon Reservoir (station 11363920) began December 1965. See 

schematic diagram of Pit and McCloud River basins. 
COOPERATION. -Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection 

with a Federal Energy Regulatory Commission project. 
EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 73,000 ft^/s, Jan. 24, 1970, gage height, 32.36 ft, site and datum then in use; 

maximum gage height, 74.65 ft, Feb. 19, 1986; minimum daily, 30 ft^/s, July 12, 27, 1975, result of construction work below Pit No. 7 

Powerplant. 



OCT 



DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 
NOV DEC JAN FEB MAR APR MAY JUN JUL 



SEP 



1 


3980 


13800 


5900 


637600 


13800 


6260 


6550 


5430 


3850 


3590 


4030 


2930 


2 


3580 


13600 


5740 


639200 


13600 


6320 


5370 


5540 


3770 


3810 


2930 


3500 


3 


3690 


13500 


6400 


640200 


13500 


5900 


5660 


4790 


3790 


4880 


967 


5210 


4 


4480 


13500 


6630 


630800 


13500 


5740 


5520 


5740 


3850 


3110 


3750 


5990 


5 


2600 


11700 


5980 


624600 


11700 


6400 


5840 


5450 


3640 


1690 


4400 


5780 


6 


3550 


11000 


6570 


621200 


11000 


6630 


5620 


5750 


4000 


588 


3200 


1170 


7 


3210 


10000 


4420 


617400 


10000 


5980 


5590 


5550 


3940 


4240 


3460 


252 


8 


3280 


9130 


5390 


ellOOO 


9130 


6570 


5820 


5100 


3870 


3620 


3120 


2200 


9 


2890 


9010 


5820 


12900 


9010 


4420 


5560 


4190 


3800 


4090 


2110 


3800 


10 


3290 


8660 


5530 


11000 


8660 


5390 


6130 


2740 


3830 


2990 


1880 


3600 


H 


3990 


8510 


5650 


10300 


8510 


5820 


4420 


2120 


3880 


4240 


3540 


4510 


12 


3450 


8420 


5900 


9790 


8420 


5530 


4200 


3650 


4160 


1340 


4630 


3660 


13 


1880 


8390 


6490 


8390 


8390 


5650 


4720 


5020 


4240 


2960 


3070 


1070 


14 


2780 


8360 


5720 


8380 


8360 


5900 


4750 


4160 


4940 


3800 


3810 


1110 


15 


3050 


8340 


6580 


6490 


8340 


6490 


5000 


4030 


1800 


3830 


4020 


3990 


16 


3680 


8310 


7700 


6200 


8310 


5720 


5570 


4180 


2880 


3850 


2010 


3920 


17 


3380 


7340 


7380 


6700 


7340 


6580 


4450 


2570 


4060 


3580 


2230 


3610 


le 


3170 


6290 


6720 


8070 


6290 


5310 


5880 


1560 


4120 


3880 


3440 


2820 


19 


3500 


8310 


5980 


6600 


i'ilO 


6190 


2550 


4100 


4160 


2070 


3890 


4360 


20 


2280 


7800 


6870 


7900 


-It 


5800 


4730 


4550 


4130 


1880 


3840 


1670 


21 


2370 


8330 


6990 


7710 


8330 


7150 


5770 


4490 


4120 


4240 


3790 


2130 


22 


3910 


6640 


85700 


8940 


6640 


6350 


6080 


3490 


3450 


3430 


3900 


3080 


23 


9500 


6690 


e6900 


9500 


6690 


6030 


7230 


6190 


2560 


3830 


2660 


3710 


24 


8420 


5670 


66000 


8420 


5670 


5540 


5470 


6720 


4130 


3930 


1790 


3530 


25 


9100 


7280 


65600 


9100 


7280 


6310 


7040 


3570 


3810 


3740 


3830 


2600 


26 


13600 


6420 


66100 


13600 


6420 


6120 


6070 


4710 


4020 


1640 


3960 


3790 


27 


12800 


6620 


65700 


12800 


6620 


5990 


5550 


3700 


4090 


1730 


3830 


2280 


28 


14500 


6290 


611900 


14500 


6290 


5940 


6740 


3590 


2040 


3440 


3900 


2410 


29 


14200 


6260 


617700 


14200 





6720 


5420 


3890 


1840 


3380 


3750 


3850 


30 


13800 


6320 


621800 


13800 





5970 


5120 


3880 


3420 


3850 


2270 


2930 


31 


13900 


--- 


632600 


13900 


— - 


5220 





3890 





4000 


2110 





TOTAL 


181810 


260490 


250360 


451190 


247910 


185940 


164420 


134340 


110190 


101248 


100117 


95462 


MEAN 


5865 


8683 


8076 


14550 


8854 


5998 


5481 


4334 


3673 


3266 


3230 


3182 


MAX 


14500 


13800 


32600 


40200 


13800 


7150 


7230 


6720 


4940 


4880 


4630 


5990 


MIN 


1880 


5670 


4420 


6200 


5670 


4420 


2550 


1560 


1800 


588 


967 


252 


AC -FT 


360600 


516700 


496600 


894900 


491700 


368800 


326100 


266500 


218600 


200800 


198600 


189300 


a 


15356 


15225 


14079 


15408 


13734 


14914 


14304 


11782 


14329 


15043 


15147 


14354 


b 


183500 


238900 


390000 


416800 


398500 


355900 


313300 


248700 


212800 


201300 


201700 


190000 


c 


33630 


33584 


33723 


33816 


31856 


33215 


33078 


26012 


30707 


33399 


33677 


33723 



e Estimated. 

a Contents, in acre-feet, at end of month for Pit No. 6 Reservoir (station 1 1364100), provided by Pacific Gas & Electric Co. 

b Discharge, in acre-feet, for Pit No. 6 Powerplant (station 1 1364150), provided by Pacific Gas & Electric Co. 

c Contents, in acre-feet, at end of month for Pit No. 7 Reservoir (station 1 1364700), provided by Pacific Gas & Electric Co. 



78 



SACRAMENTO RTVER BASIN 
1 1365000 PIT RIVER NEAR MONTGOMERY CREEK, CA— Continued 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1945 - 1965, BY WATER YEAR (WY) 

OCT NOV DEC JAN FEB MAR APR MAY JUN 



JUL 



SUMMARY STATISTICS 

ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC -FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



WATER YEARS 1945 - 1965 



3704 








5529 






1956 


2658 






1947 


32100 


Dec 


23 


1955 


150 


Jul 


19 


1965 


1610 


Jul 


19 


1965 


37100 


Dec 


23 


1955 


14.12 


Dec 


23 


1955 


2684000 








6080 








3010 








1740 









AUG 



SEP 



MEAN 


2643 


2828 


3821 


4320 


5592 


5331 


5711 


4297 


3127 


2376 


2231 


2284 


MAX 


5999 


3710 


9541 


11240 


12970 


8212 


13350 


7380 


5044 


3037 


2651 


2744 


(WY) 


1963 


1951 


1956 


1956 


1958 


1956 


1952 


1952 


1953 


1958 


1958 


1959 


MIN 


2112 


2232 


2219 


2137 


2500 


3225 


3404 


2299 


2353 


1935 


1971 


1899 


(WY) 


1950 


1950 


1950 


1949 


1948 


1964 


1947 


1947 


1950 


1949 


1947 


1949 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1966 - 1997, BY WATER YEAR (WY) 



JUL 



AUG 



SEP 



MEAN 


3381 


4104 


4746 


6563 


7050 


8040 


6566 


5367 


3916 


3248 


3087 


3074 


MAX 


5865 


8683 


9814 


20890 


18670 


16030 


12920 


11900 


6237 


4297 


4187 


3966 


(WY) 


1997 


1997 


1982 


1970 


1986 


1983 


1982 


1995 


1971 


1974 


1983 


1974 


MIN 


2286 


2533 


2408 


2632 


2784 


3241 


2626 


2404 


2268 


2291 


2049 


1428 


(WY) 


1993 


1993 


1991 


1991 


1991 


1977 


1977 


1992 


1992 


1994 


1992 


1966 



SUMMARY STATISTICS 

ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC-FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1966 - 1997 



2408224 






2283477 












6580 






6256 






4918 
7693 
2808 




1974 
1992 


32600 


Dec 


31 


40200 


Jan 


3 


53900 


Jan 23 


1970 


584 


Aug 


11 


252 


Sep 


7 


30 


Jul 12 


1975 


2930 


Sep 


6 


2730 


Sep 


7 


939 


Sep 5 


1966 








unJoiown 


Jan 


4 


73000 


Jan 24 


1970 








unJaiovm 


Jan 


4 


74.65 


Feb 19 


1986 


4777000 






4529000 






3563000 






11800 






11000 






8430 






5900 






5430 






3990 






2760 






2600 






2060 







SACRAMENTO RIVER BASIN 
1 1367500 McCLOUD RIVER NEAR McCLOUD, CA 



79 



LOCATION.--Lat 41°1 1' 18", long 122°03'52", in NW 1/4 NE 1/4 sec.34, T.39 N., R.2 W., Siskiyou County, Hydrologic Unit 18020004, on right 
bank 0.4 mi downstream from Angel Creek and 6 mi southeast of McCloud. 

DRAINAGE /iREA.--358 mi^, 

PERIOD OF RECORD.-April 1931 to current year. 

REVISED RECORDS.-- WSP 843: 1936(M). WSP 1445: 1940(M). WSP 1931: Drainage area. 

GAGE.-Water-stage recorder. Datum of gage is 2,7 1 1 .2 ft above sea level, from river-profile map. 

REMARKS.~Two small diversions upstream from station for irrigation, and one 22-in. pipeline for town of McCloud. See schematic diagram of 
Pit and McCloud River basins. 

COOPERATION. -Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD. -Maximum discharge, 1 5,400 ft^/s, Jan. 1, 1997. gage height, 11. 22 ft, from rating curve extended above 
8,800 ft^/s on basis of slope-area measurement of peak flow; minimum daily, 524 ft^/s, Nov. 23, 24, 1932. 

EXTREMES FOR CURRENT YEAR.-Peak discharges greater than base discharge of 1,500 ft^/s, or maximum: 

Discharge Gage height Discharge 

Date Time (ft'/s) (ft) Date Time (ftVs) 



Gage height 
(ft) 



Dec. 10 



0600 



3.740 



4.54 



Jan. I 



0915 



15.400 



11.22 



DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



NOV 



MAR 



APR 



MAY 



JtJN 



AUG 



1 


764 


770 


796 


11900 


1420 


1070 


1020 


1000 


893 


862 


824 


809 


2 


793 


770 


739 


6500 


1370 


1100 


1010 


998 


892 


862 


823 


809 


3 


791 


770 


734 


3610 


1320 


1080 


1000 


990 


900 


859 


822 


808 


4 


791 


770 


737 


2480 


1290 


1060 


1000 


982 


923 


855 


822 


806 


5 


790 


767 


743 


1990 


1270 


1050 


995 


977 


911 


852 


821 


806 


6 


789 


765 


744 


1700 


el270 


1050 


988 


973 


899 


850 


821 


806 


7 


788 


764 


766 


1560 


el270 


1050 


985 


967 


895 


849 


821 


804 


8 


788 


764 


1010 


1460 


el260 


1040 


981 


964 


889 


847 


821 


804 


9 


787 


761 


1800 


1390 


el250 


1040 


978 


961 


886 


847 


821 


804 


10 


785 


759 


3240 


1320 


el230 


1040 


972 


956 


885 


846 


820 


803 


11 


783 


759 


1900 


1280 


el200 


1040 


971 


953 


890 


845 


819 


803 


12 


784 


758 


1720 


1230 


ellBO 


1040 


966 


950 


898 


844 


818 


803 


13 


783 


758 


1800 


1190 


ell70 


1020 


966 


943 


888 


843 


817 


801 


14 


782 


758 


1440 


1150 


ell60 


1010 


962 


936 


882 


841 


816 


815 


15 


782 


758 


1230 


1130 


ell60 


1010 


968 


932 


877 


840 


816 


815 


16 


782 


759 


1120 


1110 


ell50 


1030 


980 


929 


873 


839 


815 


805 


17 


782 


763 


1050 


1110 


ell40 


1080 


982 


927 


871 


838 


814 


805 


18 


783 


793 


1000 


1100 


ell30 


1090 


1000 


922 


870 


837 


814 


805 


19 


782 


1040 


968 


1090 


ell30 


1070 


1170 


920 


869 


836 


813 


802 


20 


782 


1250 


946 


1080 


ell20 


1070 


1220 


916 


868 


834 


835 


799 


21 


780 


1010 


934 


1090 


1110 


1080 


1200 


912 


866 


834 


822 


799 


22 


780 


1120 


926 


1080 


1100 


1070 


1160 


910 


865 


834 


816 


799 


23 


779 


1070 


901 


1060 


1090 


1070 


1140 


916 


862 


833 


815 


798 


24 


782 


918 


882 


1040 


1080 


1060 


1100 


919 


860 


832 


819 


798 


25 


779 


875 


875 


1070 


1080 


1050 


1060 


910 


859 


832 


815 


798 


26 


775 


846 


887 


1490 


1080 


1050 


1050 


906 


859 


832 


814 


797 


27 


772 


826 


897 


1650 


1090 


1050 


1030 


903 


858 


830 


812 


796 


28 


772 


818 


1110 


1600 


1080 


1050 


1030 


901 


858 


829 


811 


795 


29 


787 


807 


2620 


1550 





1040 


1030 


899 


860 


829 


811 


796 


30 


779 


798 


4550 


1440 





1040 


1010 


896 


870 


829 


810 


795 


31 


773 


— - 


9700 


1400 


- — 


1030 





894 





826 


810 





TOTAL 


24249 


25144 


48765 


59850 


33200 


32630 


30924 


29062 


26376 


26066 


25348 


24083 


MEAN 


782 


838 


1573 


1931 


1186 


1053 


1031 


937 


879 


841 


818 


803 


MAX 


793 


1250 


9700 


11900 


1420 


1100 


1220 


1000 


923 


862 


835 


815 


MIN 


764 


758 


734 


1040 


1080 


1010 


962 


894 


858 


826 


810 


795 


AC-FT 


48100 


49870 


96730 


118700 


65850 


64720 


61340 


57640 


52320 


51700 


50280 


47770 



Estimated. 



80 



SACRAMENTO RIVER BASIN 



U 367500 McCLOUD RIVER NEAR McCXOUD. CA— Continued 

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1931 - 1997, BY WATER YEAR (WY) 



NOV 



JUL 



SEP 



MEAN 


761 


786 


861 


903 


970 


1042 


1120 


1116 


943 


830 


792 


770 


MAX 


1030 


1569 


1879 


2348 


2155 


2220 


1896 


2182 


1549 


1219 


1101 


1059 


(WY) 


1984 


1974 


1956 


1970 


1958 


1983 


1974 


1938 


1938 


1983 


1983 


1983 


MIN 


536 


537 


534 


539 


549 


568 


674 


606 


574 


561 


556 


544 


(WY) 


1933 


1933 


1933 


1933 


1933 


1935 


1994 


1992 


1992 


1934 


1992 


1932 



SUMMARY STATISTICS 



FOR 199 6 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1931 



1997 



ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC-FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



380608 






385697 










1040 






1057 






910 

1406 
589 


1974 
1992 


9700 


Dec 


31 


11900 


Jan 




11900 


Jan 1 1997 


734 


Dec 


3 


734 


Dec 




524 


Nov 23 1932 


751 


Dec 


1 


751 


Dec 




528 


Nov 20 1932 








15400 


Jan 




15400 


Jan 1 1997 








11.22 


Jan 




11.22 


Jan 1 1997 


754900 






765000 






659100 




1270 






1240 






1240 




875 






895 






835 




767 






782 






604 





SACRAMENTO RIVER BASIN 81 

1 1367720 McCLOUD-IRON CANYON DIVERSION TUNNEL NEAR McCLOUD, CA 

LOCATION.--Lat 4r08'06", long 122°04'26", in SB 1/4 SW 1/4 sec.22, T.38 N., R.2 W„ Shasta County, Hydrologic Unit 18020004, Shasta 
National Forest, on left bank of Lake McCloud, 8.8 mi southeast of McCloud. 

PERIOD OF RECORD.-December 1965 to current year. 

REVISED RECORDS.--WDR CA-75-4: 1973. 

GAGE. -None. Water-stage recorders on Iron Canyon Reservoir and Lake McCloud (stations 1 1363920 and 1 1367740) used to compute record. 

REMARKS. -Water is diverted from Lake McCloud (station 1 1367740) via tunnel to Iron Canyon Reservoir (station 1 1363920) and then via 
penstock into James B. Black Powerplant (station 1 1363910) on the Pit River. Diversion began Dec. 1, 1965. See schematic diagram of Pit 
and McCloud River basins. 

COOPERATION. -Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD.-Maximum daily discharge, 1,890 ft'/s, several days during May and June 1967; no flow several days 
in 1965-68, 1971, 1978. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 

DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 



1 


£90 


633 


942 


1220 


1370 


1250 


1090 


845 


737 


770 


701 


732 


2 


661 


626 


907 


680 


1340 


1250 


1090 


829 


762 


793 


692 


717 


3 


657 


614 


924 


639 


1340 


1210 


1070 


785 


743 


818 


697 


759 


4 


659 


626 


911 


635 


1390 


1220 


1080 


808 


790 


779 


712 


785 


5 


642 


600 


887 


678 


1380 


1190 


1070 


835 


828 


717 


724 


800 


6 


627 


622 


935 


694 


1380 


1190 


1050 


842 


862 


670 


729 


809 


7 


652 


610 


998 


716 


1390 


1140 


1050 


860 


859 


692 


742 


790 


8 


646 


642 


1070 


743 


1380 


1060 


1070 


832 


822 


706 


717 


778 


9 


668 


626 


1160 


796 


1380 


1060 


1040 


787 


834 


707 


696 


778 


10 


689 


580 


1290 


867 


1360 


1050 


1030 


759 


821 


696 


689 


779 


XI 


685 


622 


1380 


943 


1360 


1000 


997 


701 


841 


706 


692 


825 


12 


646 


620 


1380 


988 


1370 


999 


998 


668 


836 


678 


706 


800 


13 


641 


612 


1420 


1020 


1350 


981 


1010 


668 


839 


673 


699 


706 


14 


627 


624 


1380 


1010 


1350 


1020 


1010 


684 


839 


697 


729 


629 


15 


639 


614 


1410 


993 


1350 


1010 


929 


702 


808 


717 


750 


627 


16 


624 


612 


1380 


981 


1320 


986 


903 


696 


821 


732 


764 


655 


17 


641 


627 


1400 


998 


1340 


994 


864 


657 


819 


714 


756 


648 


18 


644 


626 


1330 


1030 


1270 


988 


906 


635 


808 


721 


756 


631 


19 


616 


745 


1290 


1080 


1300 


1020 


893 


646 


818 


706 


773 


668 


20 


627 


870 


1330 


1110 


1320 


1000 


944 


682 


816 


697 


776 


616 


21 


639 


947 


1340 


1150 


1310 


1020 


967 


702 


781 


719 


768 


608 


22 


653 


969 


1310 


1190 


1280 


1020 


954 


685 


782 


704 


790 


633 


23 


627 


1020 


1320 


1240 


1290 


1020 


984 


684 


790 


702 


815 


646 


24 


624 


993 


1290 


1310 


1290 


1010 


957 


729 


787 


717 


794 


673 


25 


622 


979 


1270 


1330 


1280 


980 


925 


726 


788 


730 


797 


666 


26 


633 


1020 


1280 


1340 


1260 


984 


927 


735 


790 


696 


785 


629 


27 


659 


1010 


1240 


1380 


1260 


1010 


919 


730 


803 


673 


776 


557 


28 


655 


976 


1230 


1390 


1260 


1070 


935 


730 


773 


670 


773 


564 


29 


648 


985 


1290 


1400 





1120 


902 


751 


778 


666 


787 


642 


30 


633 


954 


1320 


1400 





1110 


867 


767 


773 


684 


742 


629 


31 


627 





1220 


1410 


--- 


1100 





750 





694 


739 





TOTAL 


20001 


22604 


37834 


32361 


37270 


33062 


29431 


22910 


24148 


22044 


23066 


20779 


MEAN 


645 


753 


1220 


1044 


1331 


1067 


981 


739 


805 


711 


744 


693 


MAX 


690 


1020 


1420 


1410 


1390 


1250 


1090 


860 


862 


818 


815 


825 


MIN 


616 


580 


887 


635 


1260 


980 


864' 


635 


737 


666 


689 


557 


AC-FT 


39670 


44840 


75040 


64190 


73930 


65580 


58380 


45440 


47900 


43720 


45750 


41220 



82 



SACRAMENTO RIVER BASIN 
1 1367720 McCLOUD-mON CANYON DIVERSION TUNNEL NEAR McCLOUD, CA— Continued 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1966 - 1997, BY WATER YEAR (WY) 



NOV 



DEC 



AUG 



MEAN 


653 


670 


809 


873 


951 


1096 


1125 


1014 


890 


776 


743 


706 


MAX 


1028 


1205 


1362 


1451 


1583 


1592 


1624 


1729 


1854 


1305 


1150 


1123 


(WY) 


1984 


1984 


1974 


1970 


1970 


1970 


1966 


1967 


1967 


1967 


1971 


1983 


MIN 


.000 


.000 


333 


383 


439 


562 


445 


388 


416 


409 


343 


383 


(WY) 


1966 


1966 


1992 


1992 


1991 


1991 


1990 


1977 


1992 


1992 


1992 


1992 



SUMMARY STATISTICS 

ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
ANNUAL RUNOFF (AC -FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1966 - 1997 



344619 




325510 










942 




892 




858 

1260 
453 




1967 
1992 


1470 


Feb 2 6 


1420 


Dec 13 


1890 


May 


20 1967 


569 


Jan 31 


557 


Sep 27 


.00 


Oct 


1 1965 


612 


Nov 10 


612 


Nov 10 


.00 


Oct 


1 1965 


683600 




645600 




621800 






1350 




1320 




1400 






861 




800 




792 






633 




633 




474 







SACRAMENTO RIVER BASIN 
1 1367760 McCLOUD RIVER BELOW McCLOUD DAM, NEAR McCLOUD, CA 



83 



LOCATION.--Lat 4r07'44", long 122°04'08", in SW 1/4 NE 1/4 sec.27, T.38 N., R.2 W.. Shasta County, Hydrologic Unit 18020004, Shasta 
National Forest, on left bank 0. 1 mi downstream from Lizard Creek, 0.6 mi downstream from McCloud Dam, and 9 mi southeast of McCloud. 

DRAINAGE AREA.--404 mi^. 

PERIOD OF RECORD.--April 1966 to current year (operated as a low-flow station only), 

GAGE.--Water-stage recorder. Datum of gage is 2,398.76 ft above sea level (levels by Pacific Gas & Electric Co.). Prior to Apr. 7, 1972, at datura 
3.00 ft higher. 

REMARKS. --Low flow regulated by Lake McCloud (station 11367740) since November 1965. Most of McCloud River runoff is diverted from 
reservoir through tunnel to Iron Canyon Reservoir (station 1 1363920) in Pit River basin. This station records fishwater release. The minimum 
release requirement is 40 ft'/s at all times. Prior to water year 1974, flow was computed up to 400 ft'/s. During water years 1975-81, because 
of channel changes, flow was computed up to 200 ft^/s. Currently, because of maximum required release, flow is computed to 220 ft^/s. See 
schematic diagram of Pit and McCloud River basins. 

COOPERATION.-Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 

DAY OCT NOV DEC JMJ FEB MAR APR MAY JXIN JUL AUG SEP 



1 


200 


202 


200 








107 


105 


144 


183 


185 


184 


201 


2 


200 


203 


201 








111 


106 


144 


183 


185 


184 


200 


3 


199 


202 


202 





124 


111 


106 


144 


184 


185 


184 


199 


4 


197 


203 


202 





72 


111 


106 


134 


182 


185 


184 


198 


5 


197 


202 


203 





71 


110 


109 


134 


174 


185 


184 


198 


S 


199 


203 


203 





70 


110 


111 


133 


171 


185 


184 


197 


7 


206 


203 


195 





68 


110 


111 


133 


171 


185 


184 


197 


8 


207 


203 


98 





66 


110 


115 


133 


172 


185 


184 


196 


9 


207 


203 


99 





71 


110 


128 


133 


170 


185 


184 


196 


10 


206 


201 


106 





74 


110 


134 


133 


170 


185 


184 


195 


11 


207 


202 


83 


68 


67 


110 


134 


133 


171 


185 


184 


195 


12 


206 


202 





88 


70 


110 


134 


134 


170 


185 


184 


194 


13 


206 


203 





117 


68 


110 


134 


134 


171 


185 


184 


193 


14 


206 


202 





117 


67 


112 


134 


134 


173 


185 


184 


193 


15 


206 


202 





118 


68 


115 


136 


142 


172 


185 


184 


192 


16 


206 


202 


133 


118 


66 


114 


135 


171 


175 


185 


184 


193 


n 


206 


202 





119 


66 


104 


138 


171 


183 


185 


184 


194 


18 


206 


167 


86 


119 


66 


103 


144 


170 


184 


185 


185 


193 


19 


207 


91 


83 


119 


67 


102 


144 


170 


185 


185 


185 


194 


20 


206 


65 


80 


119 


68 


95 


145 


170 


184 


185 


184 


194 


21 


206 


94 


80 


119 


67 


95 


145 


171 


184 


185 


185 


194 


22 


203 


143 


77 


118 


70 


95 


145 


171 


184 


184 


185 


194 


23 


202 


148 


82 


117 


75 


95 


145 


172 


184 


184 


185 


194 


24 


202 


147 


87 


116 


78 


95 


145 


174 


184 


184 


185 


194 


25 


202 


149 


90 


116 


82 


98 


145 


174 


184 


183 


186 


194 


26 


202 


156 


90 


130 


82 


98 


144 


177 


185 


184 


186 


194 


27 


202 


187 


76 


113 


82 


98 


144 


179 


185 


184 


185 


194 


28 


202 


199 


60 


79 


99 


98 


144 


180 


185 


184 


185 


195 


29 


204 


197 


91 


95 





102 


144 


181 


185 


184 


185 


195 


30 


203 


200 











103 


144 


182 


185 


184 


185 


196 


31 


202 














103 





182 





183 


188 





TOTAL 


6310 


5383 











3255 


3954 


4837 


5373 


5723 


5722 


5856 


MEAN 


204 


179 











105 


132 


156 


179 


185 


185 


195 


MAX 


207 


203 











115 


145 


182 


185 


185 


188 


201 


MIN 


197 


65 











95 


105 


133 


170 


183 


184 


192 


AC -FT 


12520 


10680 











6460 


7840 


9590 


10660 


11350 


11350 


11620 



84 



SACRAMENTO RIVER BASIN 
1 1367800 McCLOUD RIVER AT AH-DI-NA, NEAR McCLOUD, CA 



LOCATION.-Ut 41''06'39", long 122°05'42", in NE 1/4 SW 1/4 sec.33. T.38 N., R.2 W., Shasta County, Hydrologic Unit 18020004. Shasta 
National Forest, on right bank at Ah-Di-Na, 1 .8 mi downstream from Squirrel Creek, 3.9 mi downstream from McCloud Dam, and 9.6 mi south 
of McCloud. 

DRAINAGE AREA.--427 mi^. 

PERIOD OF RECORD.-October 1964 to current year. 

GAGE.-Water-stage recorder. Elevation of gage is 2,160 ft above sea level, from topographic map. 

REMARKS, -Low flow completely regulated by Lake McCloud (station 1 1367740) 3.9 mi upstream since November 1965. Diversion to Iron 
Canyon Reservoir (station 1 1 363920) through McCloud-Iron Canyon diversion tunnel (station 1 1 367720) started Dec. 1, 1965. See schematic 
diagram of Pit and McCloud River basins. This station records fishwater release. The minimum release requirements range from 160 to 
210 ft^/s per schedule outlined in Federal Energy Regulatory Commission License 2 106 See schematic diagram of Pit and McCloud River 
basin. 

COOPERATION. -Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD.-Prior to completion of McCloud Dam in 1965, maximum discharge, 9,660 ft^/s, Dec. 22, 1964, gage 
height, 9.43 ft, from rating curve extended above 2,500 ft-'/s; minimum daily, 86 ft'/s, Oct, 1-26, 1964. Since completion of McCloud Dam, 
maximum discharge, 31,700 ft /s, Jan. 1, 1997, gage height, 14.77 ft, from rating curve extended above 8,000 ft'^/s on basis of slope-area 
measurement of peak flow; minimum daily, 41 ft'/s, Dec. 18-20, 1971 (caused by valve malfunction at McCloud Dam). 

EXTREMES OUTSIDE PERIOD OF RECORD.-Flood of Dec. 21. 1955, reached a stage of 12.5 ft. discharge, 17,800 ft^/s. from raUng curve 
extended above 2,500 ft^/s, 

EXTREMES FOR CURRENT YEAR.-Peak discharges greater than base discharge of 3,000 ft'/s, or maximum: 

Discharge Gage height Discharge Gage height 

(ft) Date Time (ftVs) (ft) 



Date 



Time 



(ft^/s) 



Jan. 1 



1230 



31,700 



14.77 



DAY 



OCT 



DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 
NOV DEC JAN FEB MAR APR HAY JUN J\]L 



AUG 



1 


198 


223 


242 


25200 


556 


189 


169 


196 


214 


220 


225 


237 


2 


198 


221 


237 


11600 


504 


205 


168 


196 


214 


221 


225 


236 


3 


220 


220 


235 


5410 


335 


196 


167 


193 


222 


219 


225 


235 


4 


220 


220 


237 


3410 


268 


193 


168 


193 


227 


219 


225 


234 


5 


220 


220 


253 


2080 


250 


191 


169 


191 


212 


219 


225 


233 


6 


220 


220 


251 


1680 


234 


189 


170 


191 


208 


218 


224 


233 


7 


222 


220 


358 


1570 


222 


189 


169 


185 


208 


218 


224 


233 


8 


223 


220 


593 


1370 


210 


187 


170 


180 


208 


220 


224 


232 


9 


223 


220 


1180 


1030 


207 


185 


184 


179 


206 


221 


224 


231 


10 


223 


219 


1700 


594 


204 


184 


191 


179 


206 


222 


225 


231 


11 


223 


220 


819 


253 


190 


184 


191 


179 


207 


222 


225 


230 


12 


223 


220 


748 


260 


188 


184 


189 


179 


206 


222 


225 


230 


13 


223 


220 


1330 


281 


182 


181 


189 


179 


204 


222 


225 


230 


14 


223 


220 


920 


272 


177 


183 


189 


178 


206 


224 


225 


242 


15 


223 


220 


451 


263 


173 


186 


190 


180 


206 


225 


224 


237 


16 


223 


221 


371 


261 


171 


193 


188 


209 


207 


225 


225 


233 


17 


223 


226 


325 


259 


184 


203 


186 


208 


211 


225 


225 


233 


18 


224 


268 


250 


252 


176 


196 


186 


209 


211 


225 


225 


233 


19 


223 


390 


227 


247 


174 


189 


186 


209 


212 


224 


224 


230 


20 


223 


285 


211 


245 


171 


180 


186 


209 


214 


224 


236 


230 


21 


223 


231 


199 


252 


167 


177 


200 


209 


214 


223 


226 


230 


22 


222 


412 


193 


246 


166 


176 


217 


210 


214 


224 


225 


230 


23 


220 


328 


185 


239 


169 


174 


218 


213 


214 


224 


225 


230 


24 


221 


260 


183 


234 


168 


172 


217 


212 


214 


225 


228 


230 


25 


221 


231 


183 


254 


171 


172 


214 


211 


214 


225 


225 


230 


26 


220 


220 


189 


630 


170 


172 


209 


211 


217 


225 


225 


230 


27 


220 


239 


232 


622 


167 


170 


208 


212 


217 


224 


224 


230 


28 


220 


244 


582 


542 


177 


169 


206 


212 


217 


224 


223 


230 


29 


237 


238 


1750 


492 





170 


206 


212 


217 


225 


222 


230 


30 


226 


241 


5820 


645 





170 


198 


213 


223 


225 


222 


230 


31 


224 





17000 


579 





169 





214 





225 


226 





TOTAL 


6852 


7337 


37454 


61272 


6131 


5678 


5698 


6151 


6370 


6904 


6976 


6963 


MEAN 


221 


245 


1208 


1977 


219 


183 


190 


198 


212 


223 


225 


232 


MAX 


237 


412 


17000 


25200 


556 


205 


218 


214 


227 


225 


236 


242 


HIN 


198 


219 


183 


234 


166 


169 


167 


178 


204 


218 


222 


230 


AC -FT 


13590 


14550 


74290 


121500 


12160 


11260 


11300 


12200 


12630 


13690 


13840 


13810 



SACRAMENTO RIVER BASIN 
1 1367800 McCLOUD RIVER AT AH-DI-NA, NEAR McCLOUD, CA— Continued 
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1965 - 1997, BY WATER YEAR (WY) 

OCT NOV DEC JAN FEB MAR APR MAY JUN 



AUG 



85 



SEP 



MEAN 


252 


286 


321 


470 


404 


481 


356 


336 


249 


225 


223 


234 


MAX 


919 


1140 


1863 


2211 


1770 


2107 


2102 


1498 


1173 


1035 


992 


954 


(WY) 


1966 


1974 


1965 


1970 


1986 


1983 


1965 


1965 


1965 


1965 


1965 


1965 


MIN 


180 


182 


93.2 


93.4 


119 


167 


166 


162 


160 


159 


155 


182 


(WY) 


1978 


1978 


1972 


1972 


1972 


1977 


1968 


1977 


1977 


1977 


1977 


1977 



SUMMARY STATISTICS 

ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK PLOW 
INSTANTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC -FT] 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1965 - 1997 



137940 






163786 








377 






449 




319 

1326 

168 


1965 
1977 


17000 


Dec 


31 


25200 


Jan 1 


25200 


Jan 1 1997 


166 


Jan 


5 


166 


Feb 22 


41 


Dec 18 1971 


167 


Jan 


2 


168 


Feb 21 


42 


Dec 15 1971 








31700 


Jan 1 


31700 


Jan 1 1997 








14.77 


Jan 1 


14.77 


Jan 1 1997 


273600 






324900 




231400 




431 






326 




477 




219 






221 




206 




178 






179 




168 





86 



SACRAMENTO RIVER BASIN 
1 1368000 McCLOUD RIVER ABOVE SHASTA LAKE, CA 



LOCATION,--Ut 40°57'30", long 122°13'07", unsurveyed, T.36 N., R.3 W., Shasta County, Hydrologic Unit 18020004, on right bank just 
upstream from Shasta Lake, 0.2 mi downstream from Big Bollibokka Creek, and 11.3 mi east of Lamoine. 

DRAINAGE AREA.--604 mil 

PERIOD OF RECORD.-October 1945 to current year. Prior to 1950, published as "above Shasta Reservoir." 
TEMPERATURE: Water years 1956-59. 

REVISED RECORDS.--WSP 1445: 1953(M). WSP 1931: Drainage area. WDR CA-94-4: 1993(P). 

GAGE.-Water-stage recorder. Datum of gage is 1 , 1 00.00 ft above sea level (levels by U.S. Bureau of Reclamation). 

REMARKS. --Low flow completely regulated by Lake McCloud (station 1 1367740) 16.5 mi upstream since Nov. 3. 1965. Diversions to Iron 
Canyon Reservoir (station 1 1 363920) began Dec. 1 , 1965. See schematic diagram of Pit and McCloud River basins. 

COOPERATION. -Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 5 1 ,300 fr'/s, Jan. 1 , 1 997 gage height, 29.00 ft, firom rating curve extended above 
15,000 ft'/s on basis of slope-area measurement of peak flow; minimum daily, 109 ft^/s, Dec. 16-20, 1971. Minimum prior to regulation by 
Lake McCloud, 825 ft^/s, Jan. 3, 1950. 

EXTREMES FOR CURRENT YEAR.-Peak discharges greater than base discharge of 4,500 ft^/s, or maximum: 

Discharge Gage height Discharge Gage height 

Date Time (ft^/s) (ft) Date Time (fl^/s) (ft) 



Dec. 10 
Jan. 1 



1445 
0345 



12,300 

51,300 



19.31 

29.00 



Jan. 26 



1315 



6,600 



16.73 



DAY 



OCT 



DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 

NOV DEC JAN FEB MAR APR MAY JUN JUL 



1 


331 


346 


496 


45000 


2240 


558 


405 


483 


396 


391 


304 


306 


2 


330 


340 


467 


23300 


2010 


709 


405 


471 


389 


378 


303 


306 


3 


328 


336 


452 


12000 


1690 


607 


398 


459 


444 


362 


302 


305 


4 


329 


336 


490 


7780 


1440 


580 


395 


441 


553 


352 


301 


305 


5 


328 


334 


695 


5360 


1300 


567 


389 


429 


433 


345 


299 


305 


6 


327 


331 


654 


4190 


1190 


557 


388 


419 


401 


341 


298 


304 


7 


327 


335 


1430 


3750 


1110 


543 


381 


411 


392 


332 


297 


301 


8 


327 


332 


3710 


3280 


1030 


529 


378 


401 


385 


328 


294 


300 


9 


327 


331 


7960 


2840 


970 


515 


393 


394 


382 


326 


295 


299 


10 


327 


330 


9720 


2250 


943 


507 


396 


389 


381 


326 


293 


302 


11 


327 


329 


4760 


1570 


876 


504 


394 


383 


390 


325 


295 


299 


12 


329 


329 


3680 


1450 


834 


491 


389 


379 


377 


324 


294 


299 


13 


330 


331 


3930 


1370 


788 


478 


387 


377 


371 


324 


291 


298 


14 


328 


329 


2940 


1260 


754 


472 


383 


378 


371 


321 


291 


361 


15 


328 


327 


1980 


1180 


724 


475 


380 


376 


369 


320 


289 


363 


16 


327 


331 


1560 


1110 


705 


528 


377 


412 


364 


319 


268 


330 


17 


331 


375 


1310 


1060 


767 


652 


376 


417 


367 


317 


291 


323 


18 


341 


975 


1100 


998 


696 


583 


445 


411 


367 


316 


290 


321 


19 


344 


2080 


969 


954 


683 


550 


656 


408 


364 


313 


289 


314 


20 


336 


1680 


894 


943 


657 


537 


744 


405 


363 


311 


387 


309 


21 


336 


1030 


844 


1100 


633 


510 


742 


403 


362 


311 


335 


309 


22 


338 


1890 


838 


1130 


609 


496 


677 


400 


358 


311 


309 


305 


23 


337 


1360 


801 


1040 


597 


480 


708 


426 


354 


310 


305 


305 


24 


346 


887 


765 


992 


581 


464 


658 


425 


350 


310 


314 


305 


25 


343 


693 


740 


1220 


577 


450 


613 


405 


346 


309 


305 


305 


26 


334 


590 


825 


5190 


566 


448 


579 


398 


345 


308 


305 


305 


27 


331 


555 


1460 


4510 


556 


435 


548 


400 


345 


306 


305 


303 


28 


328 


539 


3820 


3890 


547 


427 


530 


399 


344 


306 


304 


301 


29 


460 


506 


9630 


3260 





421 


515 


397 


349 


305 


300 


300 


30 


387 


487 


14100 


2810 





421 


500 


393 


428 


307 


297 


301 


31 


356 





31100 


2470 





416 





393 





306 


298 





TOTAL 


10498 


18974 


114120 


149257 


26073 


15910 


14529 


12682 


11440 


10060 


9368 


9289 


MEAN 


339 


632 


3681 


4815 


931 


513 


484 


409 


381 


325 


302 


310 


MAX 


460 


2080 


31100 


45000 


2240 


709 


744 


483 


553 


391 


387 


363 


MIN 


327 


327 


452 


943 


547 


416 


376 


376 


344 


305 


288 


298 


AC -FT 


20820 


37630 


226400 


296100 


51720 


31560 


28820 


25150 


22690 


19950 


18580 


18420 



SACRAMENTO RIVER BASIN 
1 1368000 McCLOUD RIVER ABOVE SHASTA LAKE, CA— Continued 

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1946 - 1965, BY WATER YEAR (WY) 

OCT NOV DEC JAN FEB MAR APR MAY JUN 



AUG 



87 



SEP 



MEAN 


1121 


1252 


2080 


2077 


2617 


2177 


2467 


1965 


1460 


1159 


1059 


1020 


MAX 


1899 


2162 


6513 


4525 


7493 


3966 


4599 


2978 


2248 


1715 


1489 


1395 


(WY) 


1951 


1951 


1956 


1953 


1958 


1958 


1963 


1958 


1958 


1958 


1958 


1958 


MIN 


856 


870 


856 


903 


1040 


1265 


1320 


1085 


1069 


901 


852 


839 


(WY) 


1950 


1950 


1950 


1949 


1948 


1964 


1964 


1947 


1949 


1950 


1950 


1950 



SUMMARY STATISTICS WATER YEARS 1946 - 1965 

ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC-FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 

a from rating curve extended above 6,400 ft^/s on basis of slope-area measurement of pea)c flow. 



1699 








2703 






1958 


1213 






1950 


36100 


Dec 


21 


1955 


825 


Jan 


3 


1950 


826 


Oct 


9 


1950 


345200 


Dec 


22 


1955 


28.20 


Dec 


22 


1955 


1231000 








2670 








1270 








928 









STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1967 - 1997, BY WATER YEAR (WY) 

OCT NOV DEC JAN FEB MAR APR MAY JUN 



JUL 



MEAN 


306 


581 


872 


1467 


1400 


1626 


938 


655 


409 


316 


280 


286 


MAX 


468 


4068 


3681 


6043 


5118 


5825 


2794 


1930 


952 


443 


372 


340 


(WY) 


1990 


1974 


1997 


1970 


1986 


1983 


1982 


1983 


1983 


1983 


1983 


1983 


MIN 


206 


227 


235 


222 


232 


248 


226 


232 


215 


200 


192 


200 


(WY) 


1992 


1992 


1977 


1991 


1977 


1977 


1977 


1977 


1977 


1977 


1991 


1991 



SUMMARY STATISTICS 

ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC-FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1967 - 1997 



411300 






402200 








1124 






1102 




759 

1720 

230 


1974 
1977 


31100 


Dec 


31 


45000 


Jan 1 


45000 


Jan 1 1997 


325 


Aug 


30 


288 


Aug 16 


109 


Dec 16 1971 


327 


Oct 


5 


290 


Aug 13 


113 


Dec 15 1971 








51300 


Jan 1 


51300 


Jan 1 1997 








29.00 


Jan 1 


29.00 


Jan 1 1997 


815800 






797800 




549800 




2090 






1500 




1460 




527 






394 




356 




331 






305 




246 





88 SACRAMENTO RIVER BASIN 

1 1 370000 SHASTA LAKE NEAR REDDING, CA 

LOCATION.--Ut 40°43'08 ", long 122''25'12", in SE 1/4 NW 1/4 sec, 15. T.33 N., R.5 W., Shasta County, Hydrologic Unit 18020005, in Shasta 
Dam on Sacramento River near right bank, 2 mi downstream from Squaw Creek, and 9.5 mi north of Redding. 

DRAINAGE AREA. --6,421 mi^, excluding Goose Lake basin. 

PERIOD OF RECORD. -November 1942 to current year. Prior to 1950, published as Shasta Reservoir near Redding. 
CHEMICAL DATA: Water years 1978-80. 

GAGE.-Water-stage recorder. Datum of gage is sea level (levels by U.S. Bureau of Reclamation) Prior to July 10, 1944, nonrecording gage at 
various sites near dam at same datum. Contents based on capacity table dated May 8, 1967, provided by U.S. Bureau of Reclamation. 

REMARKS. -Lake is formed by concrete gravity-type dam completed in 1949; regulation began Dec. 30, 1943. Usable capacity, 4,436,400 acre-ft 
between elevations 737 75 ft, invert of lowest set of river outlets, and 1,067.0 ft, top of flashboard gates on drum-type spillway gates. Operating 
pool from elevation, 840.0 ft, capacity, 587,127 acre-ft to 1,067.0 ft, capacity, 4,552,090 acre-ft. Dead storage, 1 15,800 acre-ft. Installation of 
flashboard gates on top of drum gates completed Nov. 12, 1964. All water passes down the Sacramento River, most of which is through 
powerplant at dam. Figures given represent total contents at 2400 hours. Lake is used for flood control, power generation, irrigation, and 
recreation. See schematic diagram of Pit and McCloud River basins. 

COOPERATION.-Records were provided by U.S. Bureau of Reclamation, not rounded to U.S. Geological Survey standards. 

EXTREMES (AT 2400) FOR PERIOD OF RECORD.-Maximum contents, 4,550,300 acre-ft. May 19, 1967, elevation, 1,066.94 f>; minimum since 
first filling, 562,600 acre-ft, Sept. 13, 1977, elevation, 836.68 ft. 

EXTREMES (AT 2400) FOR CURRENT YEAR.-Maximum contents, 4,414,072 acre-ft, Jan. 3, elevation, 1,062.32 ft; minimum, 
2,308,340 acre-ft, Sept. 30, elevation, 974.40 ft. 

Capacity table (elevation, in feet, and contents, in acre-feet) 
(Based on table provided by U.S. Bureau of Reclamation, dated May 8, 1967) 



830 


515,543 


870 


843,589 


910 


1,291,854 


950 


1,876,996 


990 


2,616,622 


1,030 


3,533,478 


840 


587,127 


880 


943,929 


920 


1,424,780 


960 


2,046,829 


1,000 


2,828,544 


1,050 


4,063,108 


850 


665,511 


890 


1,051,713 


930 


1,566,238 


970 


2,226,093 


1,010 


3,051,750 


1,067 


4,552,090 


860 


751,027 


900 


1,167,888 


940 


1,717,255 


980 


2,416,019 


1,020 


3,286,929 







OCT 



RESERVOIR STORAGE (ACRE-FEET), WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 
DAILY OBSERVATION AT 2400 HOURS 

NOV DEC JAN FEB MAR APR MAY JtJN JUL 



AUG 



SEP 



1 


3089041 


3070588 


3188572 


4251385 


3463701 


3584539 


3806355 


3939518 


3826776 


3454235 


2929100 


2543578 


2 


3088118 


3069210 


3187629 


4402695 


3461705 


3596567 


3810326 


3942229 


3820392 


3438338 


2912203 


2532829 


3 


3087193 


3065533 


3190693 


4414072 


3463451 


3605523 


3816149 


3943315 


3819060 


3425463 


2888764 


2525186 


4 


3089S04 


3062777 


3203724 


4379728 


3462205 


3614506 


3820921 


3946568 


3818530 


3407917 


2871586 


2519352 


5 


3086501 


3061628 


3212254 


4342083 


3448523 


3622993 


3826243 


3949279 


3812973 


3387998 


2855812 


2511328 


6 


3086732 


3059332 


3218194 


4324999 


3435357 


3631480 


3830235 


3950636 


3807150 


3366202 


2840311 


2494129 


7 


3085808 


3059102 


3236538 


4291239 


3418295 


3638698 


3835554 


3949822 


3800797 


3353022 


2823116 


2477020 


8 


3084422 


3060710 


3277302 


4236253 


3406689 


3647484 


3840610 


3949551 


3792855 


3337685 


2806184 


2466526 


9 


3083499 


3059790 


3384554 


4184013 


3400048 


3651362 


3843802 


3947654 


3785172 


3321443 


2788908 


2458811 


10 


3085116 


3059790 


3464951 


4120457 


3393654 


3656788 


3848068 


3940875 


3778019 


3303316 


2770631 


2450530 


11 


3086964 


3056575 


3472937 


4054266 


3391931 


3663519 


3850740 


3932739 


3767691 


3287653 


2755426 


2443251 


12 


3087425 


3052440 


3467446 


3980049 


3395374 


3669495 


3852077 


3926504 


3756349 


3266712 


2742609 


2438333 


13 


3085577 


3050836 


3469692 


3902756 


3401276 


3675729 


3853683 


3924075 


3743171 


3248018 


2727946 


2426386 


14 


3084885 


3049236 


3450757 


3824379 


3412363 


3680922 


3853683 


3919486 


3730303 


3231058 


2714172 


2416801 


15 


3085116 


3048094 


3434366 


3746861 


3424721 


3687415 


3853683 


3914361 


3710124 


3214623 


2702126 


2411343 


16 


3086270 


3048550 


3422250 


3684558 


3438089 


3696550 


3855820 


3910042 


3692634 


3197562 


2687402 


2405499 


17 


3086964 


3050150 


3409892 


3638698 


3452000 


3708298 


3856355 


3903296 


3677025 


3181498 


2673140 


2400043 


18 


3086039 


3070818 


3399310 


3597335 


3461955 


3714830 


3864371 


3893609 


3661702 


3165240 


2663106 


2392275 


19 


3085116 


3102692 


3386028 


3557550 


3477432 


3722958 


3867046 


3889580 


3646194 


3145303 


2653516 


2388206 


20 


3082805 


3125464 


3375988 


3532216 


3491703 


3730303 


3875613 


3885013 


3632252 


3125464 


2646239 


2378907 


21 


3079573 


3138531 


3364489 


3506007 


3506258 


3739744 


3885819 


3880449 


3617850 


3110121 


2637507 


2370806 


22 


3080034 


3158438 


3351805 


3473937 


3515830 


3747388 


3897101 


3872928 


3601687 


3092506 


2629649 


2364257 


23 


3079573 


3169471 


3344015 


3440575 


3525913 


3753977 


3907615 


3874269 


3583009 


3075646 


2619103 


2359826 


24 


3079342 


3175838 


3337685 


3400294 


3532973 


3758720 


3914091 


3872928 


3568750 


3058183 


2607574 


2353495 


25 


3076109 


3180553 


3335251 


3387506 


3545387 


3765572 


3921914 


3864906 


3554005 


3041923 


2599966 


2345834 


26 


3074033 


3182204 


3338903 


3454235 


3555777 


3771927 


3925692 


3859027 


3539559 


3021848 


2593605 


2341429 


27 


3073345 


3182676 


3336224 


3491201 


3565694 


3777227 


3929214 


3852612 


3522887 


3004126 


2587060 


2333604 


28 


3070818 


3184563 


3362776 


3512804 


3574861 


3782524 


3934907 


3846198 


3502494 


2988523 


2580925 


2325414 


29 


3074493 


3186685 


3440824 


3508013 





3789942 


3935179 


3842471 


3484680 


2973874 


2575405 


2314020 


30 


3072885 


3187863 


3558311 


3492457 





3796031 


3937079 


3837947 


3470692 


2960377 


2565893 


2308340 


31 


3072426 





3840610 


3475933 





3799738 





3832628 


--- 


2944938 


2554758 


--- 


[AX 


3089504 


3187863 


3840610 


4414072 


3574861 


3799738 


3937079 


3950636 


3826776 


3454235 


2929100 


2543578 


UN 


3070818 


3048094 


3187629 


3387506 


3391931 


3584539 


3806355 


3832628 


3470692 


2944938 


2554758 


2308340 


a 


1010.90 


1015.85 


1041.81 


1027.71 


1031.63 


1040.27 


1045.40 


1041.51 


1027.50 


1005.28 


986.97 


974.40 


b 


-16384 


♦115437 


»652747 


-364677 


♦98928 


♦224877 


♦137341 


-104451 


-361936 


-525754 


-390180 


-246418 



CAL YR 1996 b ^572934 
WTR YR 1997 b -780470 



a Elevation, in feet, at end of month, 
b Change in contents, in acre-feet. 



SACRAMENTO RIVER BASIN 



89 



^^ 1 Q3 CO 



CO o 

in t 



XL 



Spring Creek 
Reservoir 
5,874 acre-feet 
Storage began 1963 














w 


Keswicl( 
Reservoir 




Spring Creek 
Powerplant 371 6 _(^ 



EXPLANATION 

.3705 Gaging station and abbreviated number 

(Complete number as given in the station 
description is 1 1370500) 



Whiskeytown Lake 
241,100 acre-feet 
Since 1963 A 

3717 



ACID Canal 



r 

3705 



3716 



D 



Powerplant 

Stream, open flume, or canal showing 
direction of flow 

Penstock, tunnel, closed flume, or pipe 
showing direction of flow 



Clear 



3707 
Creek 



3720 



Cottonwood 



Creek 



-A- 



3760 



Frazier 



Creek 



Spring 



Creek 



— H 



Chum 



Creek 



-^ 



Cow 



Creek 



3740 



Soutti Cow 



Creek 



-A- 



Battle 



Creek 



3765.5 



A 



3771 



Reeds 



Creek 



Red Bank 



Creek 



Elder 



Creek 



i 



3795 



Thames 



Creek 



-A- 



3820 



Paynes Creek 



Antelope Creek 



< ^ 



Mill Creek 



3815 



-A- 



Deer 



Creek 



3835 



Pine 



Creek 



Figure 25. Diversions and storage in upper Sacramento River basin. 



90 



SACRAMENTO RIVER BASIN 
11 370500 SACRAMENTO RIVER AT KESWICK, CA 



LOCATION.--Lat 40''36'04". long 122°26'36", in SW 1/4 NW 1/4 sec.28, T.32 N., R.5 W., Shasta County, Hydrologic Unit 18020101. on right 
bank 0.4 mi upstream from Middle Creek, 0.8 mi downstream from Keswick Dam, 1.6 mi downstream from Keswick, and 10 mi downstream 
from Shasta Dam. 

DRAINAGE AREA.--6,468 mi^, excluding Goose Lake basin. 

PERIOD OF RECORD.-October 1938 to current year. Monthly discharge only for some periods, published in WSP 1315-A. 

CHEMICAL DATA: Water years 1951-94. Published as "near Keswick" in 1951 and 1953, and as "at Keswick Dam, near Keswick" in 1968-69. 
BIOLOGICAL DATA: Water years 1979-81. 
SPECIFIC CONDUCTANCE: Water years 1978-94. 
WATER TEMPERATURE: Water years 1978-94. 
SEDIMENT DATA: Water years 1978-94. 

REVISED RECORDS.-WSP 1931: Drainage area. 

GAGE— Water-stage recorder. Datum of gage is 479.81 ft above sea level. Prior to Oct. 1, 1939, at site 1.5 mi upstream at datum 20.2 ft higher and 
Oct. 1, 1939, to Apr. 30, 1942, at site 1.5 mi upstream at datum 15.2 ft higher. Aug. 20, 1960, to July 3, 1973, auxiliary water-stage recorder 
at city of Redding pumping plant 2.1 mi downstream. 

REMARKS— Records good. Flow completely regulated by Shasta Lake (station 1 1370000) beginning Dec. 30, 1943. Minor regulation by Keswick 
Reservoir since 1950, total capacity, 23,800 acre-ft, operational capacity, 4,170 acre-ft, between normal operating elevations of 579.0 ft and 
586.0 ft. No diversion between Shasta Dam and station at Keswick. Since December 1963, water is released from Whiskeytown Lake (station 
11371700), through a tunnel to Spring Creek Powerplant (station 11371600), and then into Keswick Reservoir. See schematic diagrams of 
upper Sacramento River basin and Pit and McCIoud River basins. 

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 186,000 ft'/s, Feb. 23, 1940, gage height, 47.2 ft, site and datum then in use, 
from rating curve extended above 75,000 ft'/s on basis of peak discharge at Kennet plus 4,000 ft^/s estimated inflow; minimum observed, 
2,730 ft^/s, Aug. 22, 1939. Since regulation by Shasta Dam in 1943, maximum discharge, 81,400 ft^/s, Apr. 1, 1974, gage height, 31.92 ft; 
maximum gage height, 32.71 ft, Jan. 4, 1997; minimum discharge, 154 ft^/s. May 15, 1948. 



DAY 



DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 
NOV DEC JAN FEB MAR APR MAY JlIN JUL 



1 


7290 


65130 


5130 


20200 


31300 


5200 


4890 


8030 


10300 


15000 


14300 


9710 


2 


7270 


5140 


5140 


43200 


25800 


5180 


4930 


7590 


10400 


15100 


14200 


9970 


3 


7270 


5150 


5140 


66700 


21400 


5220 


64880 


7460 


10400 


14700 


14400 


10400 


4 


eeio 


5150 


5170 


77900 


23000 


5210 


64930 


7490 


10300 


14600 


14500 


10500 


5 


6730 


5210 


5180 


66500 


25900 


5240 


64970 


7640 


10300 


14500 


14000 


10600 


6 


6760 


5200 


5150 


48500 


26000 


5170 


64530 


7900 


10600 


14500 


14000 


10600 


7 


6730 


5190 


8200 


49000 


26100 


4960 


64590 


8350 


10700 


14200 


13500 


10600 


8 


6730 


5110 


13200 


49500 


23300 


4910 


64700 


8530 


11200 


14800 


13500 


9250 


9 


6330 


5440 


18700 


49200 


19600 


4950 


64760 


8480 


11100 


15000 


13200 


8670 


10 


5630 


5340 


27600 


49600 


16700 


4970 


64750 


8890 


12100 


15000 


13000 


8610 


11 


5470 


5220 


35500 


50600 


14100 


5040 


64760 


9600 


12700 


15200 


12700 


7850 


12 


5220 


5230 


35500 


52300 


11500 


5020 


64780 


9570 


13600 


15200 


12100 


7810 


13 


5110 


5270 


31400 


51800 


9650 


5020 


65400 


8890 


14100 


15300 


11800 


7860 


14 


5050 


5110 


31000 


52200 


8330 


5010 


65860 


9050 


14600 


15400 


12100 


7900 


15 


4890 


5090 


26500 


49800 


6890 


5000 


65900 


9750 


15100 


15200 


11200 


7850 


16 


5030 


5070 


23100 


41700 


5860 


5080 


65860 


9320 


15000 


15300 


10100 


7890 


17 


5080 


5150 


20400 


35400 


5570 


5030 


66220 


9010 


15100 


15000 


9950 


7330 


le 


5080 


5300 


18100 


35300 


5410 


5010 


6200 


9190 


15100 


14900 


10100 


7250 


19 


5100 


5310 


17700 


31400 


5490 


4980 


6600 


8880 


15100 


15100 


10000 


6900 


20 


5060 


5190 


17700 


27100 


5100 


5140 


6570 


9120 


14500 


15000 


10200 


6850 


21 


5090 


5160 


17900 


29100 


5240 


5140 


6240 


9610 


14600 


15200 


9580 


6890 


22 


5100 


5210 


18000 


35700 


5340 


5130 


5870 


10100 


14600 


15400 


8980 


6930 


23 


5090 


5170 


15700 


33400 


5460 


5120 


5450 


10100 


14700 


15300 


8970 


6880 


24 


5100 


5160 


13500 


36100 


5430 


5080 


5430 


10300 


14600 


14900 


9050 


6900 


25 


5100 


5160 


11800 


28200 


5170 


5070 


6140 


10400 


14500 


15000 


9050 


7000 


26 


5090 


5170 


10500 


21700 


5150 


4980 


7220 


10500 


14800 


14800 


8550 


7050 


27 


5080 


5130 


19300 


21400 


5150 


4900 


7610 


10300 


15100 


13900 


8520 


6940 


28 


65330 


5140 


26600 


27400 


5200 


4940 


8020 


9790 


15000 


14300 


8010 


6940 


29 


65230 


5140 


41100 


36100 





4950 


8420 


9470 


14900 


14300 


8310 


6810 


30 


65330 


5140 


48200 


36400 





4950 


7990 


9660 


14900 


14500 


8610 


6570 


31 


65170 





31400 


36200 





4960 





9800 





14400 


8850 





TOTAL 


175550 


155580 


609510 


1289600 


359140 


156560 


174470 


282770 


400000 


461000 


345330 


243310 


MEAN 


5663 


5186 


19660 


41600 


12830 


5050 


5816 


9122 


13330 


14870 


11140 


8110 


MAX 


7290 


5440 


48200 


77900 


31300 


5240 


8420 


10500 


15100 


15400 


14500 


10600 


MIN 


4890 


5070 


5130 


20200 


5100 


4900 


4530 


7460 


10300 


13900 


8010 


6570 


AC -FT 


348200 


308600 


1209000 


2558000 


712400 


310500 


346100 


560900 


793400 


914400 


685000 


482600 


e Estimated. 

























SACRAMENTO RIVER BASIN 
1 1370500 SACRAMENTO RIVER AT KESWICK, CAbContinued 



91 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1946 - 1962, BY WATER YEAR (WY) 

OCT NOV DEC JAN FEB MAR APR MAY JUN 



MEAN 


5992 


5603 


6611 


10610 


11700 


6564 


6714 


8212 


8564 


9951 


10030 


7331 


MAX 


8572 


8970 


16680 


32870 


44170 


14490 


21180 


13400 


10300 


11810 


11870 


10030 


(WY) 


1959 


1958 


1951 


1953 


1958 


1957 


1958 


1948 


1948 


1951 


1958 


1958 


MIN 


4785 


4064 


3726 


3234 


3060 


2546 


2830 


5247 


6437 


7480 


7057 


5239 


(WY) 


1948 


1952 


1960 


1962 


1950 


1950 


1950 


1951 


1947 


1947 


1947 


1947 



SUMMARY STATISTICS 

ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANTANEOUS PEAK STAGE 
INSTANTANEOUS LOW FLOW 
ANNUAL RUNOFF (AC -FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



WATER YEARS 1946 - 1962 



8141 








13910 






1958 


5364 






1950 


75800 


Feb 


21 


1958 


2360 


Mar 


15 


1950 


2440 


Mar 


9 


1950 


78800 


Feb 


21 


1958 


31.55 


Feb 


21 


1958 


154 


May 


15 


1948 


5898000 








11600 








7000 








3720 









STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1964 - 1997, BY WATER YEAR (WY) 



OCT 



NOV 



JAN 



SEP 



MEAN 


6220 


7257 


10050 


11680 


12720 


11030 


8958 


10470 


11330 


12540 


11580 


8213 


MAX 


10290 


23430 


27340 


41600 


38970 


47170 


26840 


17410 


14960 


14870 


14330 


11800 


(WY) 


1984 


1974 


1974 


1997 


1983 


1983 


1974 


1995 


1983 


1997 


1996 


1971 


MIN 


3431 


3182 


2847 


3258 


3268 


2869 


3096 


6953 


7342 


7754 


8070 


4564 


(WY) 


1978 


1993 


1978 


1993 


1990 


1991 


1991 


1992 


1992 


1992 


1992 


1977 



SUMMARY STATISTICS 

ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANTANEOUS PEAK STAGE 
INSTANTANEOUS LOW FLOW 
ANNUAL RUNOFF (AC-FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1964 - 1997 



4585710 






4652820 










12530 






12750 






10170 

18230 

5390 


1974 
1992 


55100 


Feb 


24 


77900 


Jan 


4 


79700 


Mar 31 1974 


4630 


Jan 


6 


4530 


Apr 


6 


2360 


Mar 17 1989 


4640 


Jan 


6 


4700 


Apr 


6 


2460 


Mar 12 1989 








79200 


Jan 


4 


81400 


Apr 1 1974 








32.71 


Jan 


4 


32.71 
154 


Jan 4 1997 
May 15 1948 


9096000 






9229000 






7364000 




24200 






27200 






14900 




10200 






8890 






8500 




5070 






5080 






3950 





92 SACRAMENTO RIVER BASIN 

11 370700 ANDERSON-COTTONWOOD IRRIGATION DISTRICT CANAL AT SHARON STREET, AT REDDING, CA 

LOCATION.--Lat 40°34'08", long 122"*22'49", unsurveyed, Shasta County, Hydrologic Unit 18020101 . on right bank of canal 10 ft upstream from 
Sharon Street, 900 ft downstream from Parkview Avenue, and 0.75 mi southwest of Mercy Hospital 

PERIOD OF RECORD-April to September 1989, April 1991 to current year (beginning October 1994, irrigation season only). 

GAGE.--Water-stage recorder and acoustic-velocity meter. Elevation of gage is 480 ft above sea level, from topographic map. 

REMARKS— Records good. Canal diverts from Sacramento River 0.3 mi downstream from Southern Pacific Railroad bridge and 1 mi upstream 
from Highway 273; water is used for irrigation. See schematic diagrams for upper Sacramento River basin and Pit and McCloud River basins. 

EXTREMES FOR PERIOD OF RECORD -Maxinnum daily discharge, 370 ft^/s, June 9, 1989; minimum, no flow at times each year. 



DAY 



OCT 



DISCHARGE. CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 

NOV DEC JAN FEB MAR APR MAY JtJN JOT, 



AUG 



SEP 



1 


258 


2 


256 


3 


249 


4 


242 


5 


240 


6 


235 


7 


235 


8 


239 


9 


248 


10 


245 


11 


241 


12 


231 


13 


228 


14 


223 


15 


219 


16 


218 


17 


207 


18 


196 


19 


192 


20 


191 


21 


191 


22 


191 


23 


187 


24 


180 


25 


172 


26 


109 


27 


29 


28 


17 


29 





30 





31 





TOTAL 





MEAN 





MAX 





MIN 





AC -FT 





e Estimated 






261 


295 


288 


281 


285 





280 


294 


287 


280 


285 





299 


299 


290 


282 


288 





305 


299 


292 


282 


288 





307 


299 


291 


275 


287 





315 


289 


292 


299 


286 





327 


286 


291 


297 


2SS 





321 


288 


293 


293 


280 





321 


288 


297 


287 


276 





325 


290 


297 


286 


274 


e58 


328 


289 


299 


282 


269 


187 


329 


290 


290 


279 


265 


221 


327 


292 


277 


277 


264 


226 


329 


293 


285 


283 


260 


224 


326 


295 


290 


289 


el96 


239 


322 


289 


289 


288 


218 


294 


321 


288 


287 


288 


244 


309 


323 


284 


285 


290 


244 


309 


330 


282 


284 


288 


240 


307 


330 


281 


283 


291 


243 


309 


332 


282 


281 


288 


250 


316 


333 


274 


282 


289 


252 


310 


340 


263 


298 


289 


250 


294 


340 


227 


299 


289 


249 


264 


338 


77 


301 


288 


249 


272 


337 


242 


301 


285 


248 


296 


323 


282 


298 


283 


245 


292 


307 


290 


296 


281 


245 


257 


309 


296 


285 


281 


248 


250 


308 


291 


282 


282 


251 





305 





282 


282 








9898 


8334 


8992 


8854 


7764 





319 


278 


290 


286 


259 





340 


299 


301 


299 


288 





261 


77 


277 


275 


196 





19630 


16530 


17840 


17560 


15400 



KLAMATH RIVER BASIN 
1 1 525430 JUDGE FRANCIS CARR POWERPLANT NEAR FRENCH GULCH, CA 



93 



LOCATION.--Lat 40''38'49", long 122°37'34", Shasta County, Hydrologic Unit 18010212, at powerplant 1.6 mi downstream from MiU Creek and 

3.8 mi south of French Gulch. 
PERIOD OF RECORD.--April 1963 to current year. 
GAGE. -Recorded powerplant output. 
REMARKS. -Water is diverted from Trinity River at NW 1/4 SE 1/4 sec. 8, T.33 N., R.8 W., through a tunnel to powerplant and then into 

Whiskeytown Lake (station 11371 700). See schematic diagram of upper Sacramento and Pit and McCloud River basins. 
COOPERATION. -Records were provided by U.S. Bureau of Reclamation, not rounded to U.S. Geological Survey standards. 
EXTREMES FOR PERIOD OF RECORD.-Maximum daily discharge, 4,000 ft^/s, Oct. 18, 1987; no flow for many days most years. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 

DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 



1 


2565 





356 


311 


265 


1433 


834 


1738 


2582 


2950 


2635 


903 


2 


2258 


122 


251 


333 


332 


1164 


945 


1720 


2761 


2848 


2881 


1294 


3 


2464 





397 


326 


320 


1345 


947 


1675 


2545 


3023 


2083 





4 


2461 





3 


299 


318 


1488 


1273 


2058 


2671 


2884 


1824 





5 


2743 





5 


314 


318 


2007 


1162 


2312 


2830 


2679 


2173 


719 


6 


2339 





8 


238 


317 


2064 


843 


2059 


2764 


2846 


2271 


836 


7 


2844 








316 


315 


1828 


176 


1661 


2978 


3222 


2511 


842 


8 


2845 








274 


312 


498 


839 


1535 


2982 


3224 


2016 


857 


9 


2591 





6 


318 


245 


321 


713 


1624 


2486 


3210 


2176 


887 


10 


1557 


143 





319 


225 


580 


499 


1686 


2976 


3214 


1537 


745 


11 


1158 





8 


322 


241 


477 


630 


1687 


3072 


3219 


1551 


493 


12 


1622 





150 


317 


209 


561 


577 


1788 


3211 


2884 


1277 


448 


13 


1259 





325 


318 


216 


531 





1761 


3024 


2861 


1003 





14 


873 


29 


354 


320 


736 


528 


748 


1800 


3041 


2924 


1018 





15 


855 





466 


315 


938 





427 


1685 


3034 


2957 


1096 


496 


16 


880 





328 


313 


1122 





681 


1803 


3026 


2953 


1017 


249 


17 


830 


144 


316 


298 


1006 





2299 


1974 


2949 


3002 


1075 


250 


18 


1194 





314 


322 


890 





2102 


1848 


3090 


3037 


1089 





19 


1004 





262 


313 


882 


C 


2696 


1681 


3193 


3168 


911 


296 


20 


765 





305 


316 


971 





2336 


1896 


2863 


3172 


1032 


284 


21 


764 





314 


316 


958 





1866 


1851 


3093 


3175 


1079 


295 


22 








316 


331 


977 





1881 


1809 


3071 


3185 


876 


294 


23 








309 


345 


995 


14 





1977 


3041 


3028 


965 


372 


24 








309 


324 


951 


485 





2369 


3077 


3055 


1035 


296 


25 





14 


313 


324 


1106 





1557 


2401 


3136 


3090 


1148 


295 


26 





824 


315 


336 


1863 


1 


2303 


2370 


3092 


3082 


1085 


293 


27 





413 


316 


319 


947 





2338 


2476 


3074 


2974 


1147 


301 


28 





251 


365 


318 


988 





1828 


2537 


3082 


2844 


998 


247 


29 





348 


349 


318 








2517 


1963 


2750 


2837 


1054 


139 


30 


174 


357 


437 


319 








1723 


2461 


2900 


3023 


934 


326 


31 





--- 


370 


321 


--- 








2939 





3202 


704 





TOTAL 


36045 


2645 


7567 


9773 


18963 


15325 


36740 


61144 


88394 


93772 


44201 


12457 


MEAN 


1163 


88.2 


244 


315 


677 


494 


1225 


1972 


2946 


3025 


1426 


415 


MAX 


2845 


824 


466 


345 


1863 


2064 


2696 


2939 


3211 


3224 


2881 


1294 


MIN 











238 


209 








1535 


2486 


2679 


704 





AC -FT 


71500 


5250 


15010 


19380 


37610 


30400 


72870 


121300 


175300 


186000 


87670 


24710 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1963 - 1997, BY WATER YEAR (WY) 

OCT NOV DEC JAN FEB MAR APR MAY JUN 



MEAN 


1358 


839 


688 


595 


820 


864 


1147 


1330 


1873 


2358 


2227 


2096 


MAX 


3363 


2158 


2891 


2755 


3225 


3115 


3220 


3515 


3662 


3589 


3236 


3504 


(WY) 


1988 


1967 


1979 


1982 


1974 


1974 


1970 


1974 


1969 


1968 


1977 


1988 


MIN 


166 


18.0 


.16 


.000 


.34 


.000 


.000 


.097 


.63 


253 


507 


415 


(WY) 


1994 


1992 


1993 


1986 


1988 


1988 


1978 


1991 


1993 


1978 


1992 


1997 



SUMMARY STATISTICS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1963 - 1997 



ANNUAL TOTAL 


540546 








427026 
















ANNUAL MEAN 


1477 








1170 








1364 








HIGHEST ANNUAL MEAN 


















2486 






1974 


LOWEST ANNUAL MEAN 


















301 






1978 


HIGHEST DAILY MEAN 


3257 




Feb 


13 


3224 




Jul 


8 


4000 


Oct 


18 


1987 


LOWEST DAILY MEAN 







Jan 


1 







Oct 


22 





May 


6 


1963 


ANNUAL SEVEN-DAY MINIMUM 




00 


Jan 


10 




00 


Oct 


22 


.00 


Oct 


14 


1969 


ANNUAL RUNOFF (AC -FT) 


1072000 








847000 








988400 








10 PERCENT EXCEEDS 


3160 








2980 








3140 








50 PERCENT EXCEEDS 


1300 








842 








1100 








90 PERCENT EXCEEDS 




00 






, 


00 






.00 









94 



SACRAMENTO RIVER BASIN 
1 1371600 SPRING CREEK POWERPLANT AT KESWICK, CA 



LOCATION.--Ut 40°37'4r', long 122''27'59", in NE 1/4 SE 1/4 sec.18, T.32 N., R.5 W., Shasta County, Hydrologic Unit 180201 12, at powerplant 
on Spring Creek, 0.4 mi northwest of Keswick, and 4.9 mi northwest of Redding. 

PERIOD OF RECORD.-December 1963 to current year. 

GAGE.-Discharge computed from powerplant output. 

REMARKS. --Water is released from Whiskeytown Lake (station 1 1371700) through a tunnel to powerplant and then into Keswick Reservoir. 
Spring Creek Reservoir releases into Keswick Reservoir at Spring Creek Powerplant. See schematic diagrams of upper Sacramento River and 
Pit and McCloud River basins. 

COOPERATION— Records were provided by U.S. Bureau of Reclamation, not rounded to U.S. Geological Survey standards. 

EXTREMES FOR PERIOD OF RECORD.-Maximum daily discharge, 4,800 ft^/s. May 2, 1983; no flow for many days most years. 

DISCHARGE, CUBIC FEET PER SECOND. WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 

DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 



1 


2394 


331 


298 


3518 


1988 


1451 


265 


1881 


2500 


2938 


2498 


993 


2 


2502 


264 


429 


295 


1322 


1079 


267 


1886 


2605 


2974 


2500 


955 


3 


2537 


262 


307 


1904 


762 


1631 


296 


1884 


3036 


2360 


2019 


701 


4 


2507 


273 


291 


3960 


848 


1461 


266 


1911 


3685 


2930 


1967 


1040 


5 


2500 


274 


277 


3693 


943 


799 


256 


1854 


2731 


2899 


1989 


740 


6 


2505 


265 


263 


3705 


1988 


728 


256 


2016 


2631 


2940 


2050 


782 


7 


2521 


259 


368 


3733 


2003 


810 


293 


1667 


2784 


2922 


2045 


803 


8 


2465 


270 


1216 


2481 


2201 


705 


305 


2017 


2791 


2938 


2059 


741 


9 


2597 


589 


3186 


2488 


1580 


713 


36 


1912 


2851 


2960 


1996 


732 


10 


1958 


1040 


3736 


1495 


680 


809 


233 


1950 


2942 


2944 


1567 


722 


11 


1714 


150 


3751 


1477 


260 


721 


19 


1953 


3012 


2925 


1495 


552 


12 


1921 


360 


3743 


1390 


1107 


727 





1942 


3134 


2915 


1088 


245 


13 


1673 


250 


2465 


1473 


832 


771 


17 


1952 


2990 


2905 


1024 


236 


li 


1263 


168 


1270 


1442 


1461 


16 


4 


1959 


3001 


3013 


1141 


249 


15 


1252 


87 


1298 


1449 


1278 


17 





1963 


3047 


2999 


965 


273 


16 


1278 


24 


1270 


1436 


1002 


38 


441 


1907 


3064 


2954 


988 


255 


17 


1077 





491 


2112 


1384 


1162 


929 


2043 


3005 


3047 


957 


257 


18 


977 


148 


312 


2099 


1458 


259 


1298 


1877 


2984 


2926 


927 


272 


19 


783 


1104 


627 


1724 


1531 


263 


1877 


1493 


3021 


2934 


913 


269 


20 


825 


1271 


685 


1775 


1202 


264 


1869 


1791 


2949 


2907 


934 


267 


21 


809 


257 


1386 


364 


1069 


264 


1867 


1835 


2938 


2944 


989 


264 


22 


724 


259 


780 


2304 


1066 


265 


1302 


2045 


2915 


2949 


1009 


268 


23 


722 


374 


671 


1139 


1076 


263 


241 


2339 


2919 


2935 


989 


143 


24 


761 


265 


266 


1671 


1543 


1 


258 


2097 


2921 


2959 


995 


268 


25 


784 


306 


567 


289 


1785 


7 


704 


2149 


2890 


2978 


1061 


250 


26 


394 


268 


578 


1749 


1913 


6 


1305 


2285 


3000 


2862 


957 


264 


27 


366 


258 


573 


1690 


639 


11 


1864 


2531 


2922 


2931 


971 


258 


28 


429 


290 


958 


2034 


1297 


17 


1883 


2666 


2957 


2972 


985 


268 


29 


204 


274 


2619 


2555 





191 


1894 


2902 


2835 


2957 


1177 


273 


30 


500 


262 


3827 


2563 





267 


1894 


2494 


2905 


2945 


1082 


274 


31 


415 





3742 


2134 





298 





2629 





2936 


1005 





TOTAL 


43357 


10202 


42250 


62141 


36218 


16014 


22139 


63830 


87965 


90698 


42342 


13614 


MEAN 


1399 


340 


1363 


2005 


1294 


517 


738 


2059 


2932 


2926 


1366 


454 


MAX 


2597 


1271 


3827 


3960 


2201 


1631 


1894 


2902 


3685 


3047 


2500 


1040 


MIN 


204 





263 


289 


260 


1 





1493 


2500 


2360 


913 


143 


AC -FT 


86000 


20240 


83800 


123300 


71840 


31760 


43910 


126600 


174500 


179900 


83990 


27000 


a 


298 


732 


5990 


13400 


4860 


1140 


900 


732 


506 


149 


93 


258 



a Discharge, in acre-feet, from Spring Creek Reservoir, provided by U.S. Bureau of Reclamation. 



SACRAMENTO RIVER BASIN 
11371600 SPRING CREEK POWERPLANT AT KESWICK, CA— Continued 

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1964 - 1997, BY WATER YEAR (WY) 

OCT NOV DEC JAN FEB MAR APR MAY JUN 



95 



SEP 



MEAN 


1644 


1275 


1130 


1358 


1568 


1604 


1345 


1543 


2026 


2416 


2310 


2241 


MAX 


3691 


3175 


4033 


4533 


4499 


4364 


4405 


4265 


3866 


3886 


3654 


3526 


(WY) 


1989 


1967 


1974 


1974 


1974 


1983 


1983 


1983 


1969 


1968 


1977 


1988 


MIN 


265 


.87 


1.55 


2.10 


3.36 


86.6 


5.23 


5.45 


158 


250 


467 


416 


(WY) 


1978 


1992 


1992 


1991 


1991 


1988 


1987 


1991 


1989 


1978 


1992 


1992 



SUMMARY STATISTICS 

ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
ANNUAL RUNOFF (AC-FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1964 - 1997 



671098 




530770 










1834 




1454 






1704 

3390 

748 


1974 
1992 


4018 


Mar 4 


3960 


Jan 


4 


4800 


May 2 1983 





Nov 17 





Nov 


17 





Mar 30 1974 


148 


Nov 12 


44 


Apr 


9 


.00 


Mar 26 1976 


1331000 




1053000 






1235000 




3500 




2950 






3490 




1640 




1270 






1570 




273 




258 






15 





96 



SACRAMENTO RIVER BASIN 
1 1371700 WHISKEYTOWN LAKE NEAR IGO, CA 



LOCATION.-Lat 40°37'03 ", long 122°31'31", unsurveyed, Shasta County, Hydrologic Unit 180101 12, Whiskeytown- Shasta-Trinity National 
Recreation Area, at outlet works to Spring Creek Powerplant on Clear Creek, 1 .8 mi downstream from Whiskey Creek, and 7.8 mi northeast 
of Igo. 

DRAINAGE AREA.-200 mil 

PERIOD OF RECORD.--May 1963 to current year. Prior to October 1964 published as Whiskeytown Reservoir near Igo. 

GAGE.-Waler-stage recorder. Datum of gage is sea level (levels by U.S. Bureau of Reclamation) Contents based on capacity table dated April 
1962 provided by U.S. Bureau of Reclamation. 

REMARKS. -Lake is formed by earth and rockfill dam. Storage began in May 1963. Usable capacity, 241,088 acre-ft between elevations 972.0 ft, 
invert of sluice pipe, and 1,210.00 ft, crest of glory hole spillway. Dead storage 8 acre-ft. Normal operating pool is from elevation 1,197.0 ft, 
capacity, 201,288 acre-ft, to 1,210.0 ft, capacity, 241,096 acre-ft. Transbasin waterenters the reservoir through Judge Francis Carr Powerplant 
(station 1 1525430) and is released through Spring Creek Tunnel to Spring Creek Powerplant (station 1 1371600) and Keswick Reservoir. 
Figures given represent total contents at 2400 hours. Lake is used for power generation and recreation. See schematic diagrams of upper 
Sacramento River and Pit and McCloud River basins. 

COOPERATION— Records were provided by U.S. Bureau of Reclamation, not rounded to U.S. Geological Survey standards. 

EXTREMES (AT 2400) FOR PERIOD OF RECORD.-Maximum contents, 258,600 acre-ft. Mar. 2, 1983, elevation, 1,215.34 ft; minimum since 
first filling, 145,562 acre-ft, Dec. 27, 1992, elevation, 1,176.05 ft. 

EXTREMES (AT 2400) FOR CURRENT YEAR.-Maximum contents, 252,781 acre-ft, Jan 1, elevation, 1,213.59 ft; minimum, 194,777 acre-ft, 
Feb. 25, elevation, 1,194.74 ft. 

Capacity table (elevation, in feet, and contents, in acre-feet) 
(Based on survey by U.S. Bureau of Reclamation in 1962) 



1.015 


714 


1,040 


3,055 


1,080 


15,076 


1,140 


73,960 


1,020 


994 


1,050 


4,898 


1,100 


27,542 


1,180 


155,276 


1,030 


1,797 


1,060 


7,418 


1,120 


46,701 


1,220 


274,389 



RESERVOIR STORAGE (ACRE-FEET), WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY OBSERVATION AT 2400 HOURS 

NOV DEC JAN FEB MAR APR MAY JUN JUL 



1 


239143 


217716 


205653 


252781 


204857 


196782 


205653 


238023 


238951 


237514 


236973 


237323 


2 


238471 


217200 


205240 


251727 


204769 


197443 


207155 


237609 


239496 


237196 


237577 


237959 


3 


238279 


216562 


205358 


246691 


205446 


197386 


208640 


237228 


239496 


238567 


237577 


237895 


4 


238151 


215804 


205329 


242289 


205947 


197845 


210933 


237641 


237386 


238119 


237069 


237927 


5 


238439 


215110 


205770 


238631 


206065 


200766 


212939 


238823 


237768 


237450 


236910 


237768 


6 


237927 


214356 


205682 


234118 


203975 


204034 


214205 


239560 


238055 


236910 


237260 


237895 


7 


238311 


213692 


206919 


229339 


201639 


206625 


214084 


240040 


238439 


237260 


237991 


237959 


B 


238983 


212910 


207868 


226566 


198710 


206389 


215261 


239688 


238791 


237514 


237800 


238119 


9 


238855 


211562 


214718 


223873 


197070 


206006 


216622 


239367 


238279 


237927 


237927 


238439 


10 


237673 


209442 


217959 


223349 


197098 


205888 


217230 


239079 


238311 


238183 


237895 


238439 


11 


236242 


208996 


214748 


222639 


197931 


205770 


218446 


238855 


238119 


238567 


237895 


238279 


12 


235448 


208076 


210245 


221809 


196926 


205623 


219604 


238759 


237927 


238183 


238215 


238567 


13 


234307 


207274 


207868 


220676 


196495 


205417 


219604 


238567 


237927 


237800 


238055 


237959 


14 


233266 


206772 


207601 


219573 


195489 


206625 


221105 


238439 


237800 


237450 


237863 


237545 


15 


232161 


206477 


207067 


218385 


195604 


206802 


221932 


238087 


237863 


237132 


237863 


238087 


16 


231186 


206242 


206389 


217139 


196437 


207363 


222516 


237863 


237863 


236783 


237927 


23805S 


17 


230435 


206507 


206684 


214507 


196294 


205505 


225354 


237641 


237800 


236528 


238087 


238023 


18 


230748 


207274 


207304 


211562 


195776 


205358 


227467 


237768 


237991 


236528 


238215 


237482 


19 


231092 


207541 


207185 


209115 


195148 


205181 


229527 


238183 


238055 


236846 


237991 


237545 


20 


230717 


205829 


207067 


206978 


195319 


205004 


230873 


238407 


237514 


237132 


238247 


237545 


21 


230341 


205682 


205329 


207779 


195547 


204769 


231155 


238503 


237514 


237386 


238471 


237609 


22 


228681 


205682 


204975 


204887 


195949 


204563 


232729 


237895 


237577 


237641 


238055 


237609 


23 


226939 


205122 


204474 


204034 


196323 


204327 


232477 


237418 


237577 


237577 


237927 


238087 


24 


225323 


204739 


205034 


202340 


195719 


205446 


232130 


237991 


237641 


237514 


237959 


238151 


25 


223503 


204151 


205034 


204857 


194777 


205594 


233991 


238791 


237863 


237514 


238119 


238279 


26 


222608 


205240 


205387 


208907 


195233 


205711 


236370 


239175 


237800 


238247 


238439 


238343 


27 


221595 


205476 


206065 


210275 


196380 


205741 


237450 


239208 


237927 


238247 


238727 


238407 


28 


220584 


205358 


207422 


210694 


196236 


205770 


237291 


239367 


238087 


237069 


238759 


238407 


29 


220370 


205417 


213783 


209412 





205476 


238599 


237609 


237673 


236592 


238439 


238151 


30 


219665 


205564 


220523 


207571 





205004 


238407 


237641 


237641 


236465 


238151 


238279 


31 


218598 





240328 


206242 





204445 


--- 


238503 


... 


236783 


237482 


--- 


lAX 


239143 


217716 


240328 


252781 


206065 


207363 


238599 


240040 


239496 


238567 


238759 


238567 


[IN 


218598 


204151 


204474 


202340 


194777 


196782 


205653 


237228 


237386 


236465 


236910 


237323 


a 


1202.81 


1198.46 


1209.76 


1198.69 


1195.25 


1198.08 


1209.16 


1209.19 


1208.92 


1208.65 


1208.87 


1209.12 


b 


-20257 


-13034 


♦34764 


-34086 


-10006 


♦ 8209 


♦33962 


♦ 96 


-862 


-858 


♦ 699 


♦ 797 



CAL YR 1996 b +35500 
WTR YR 1997 b -576 



a Elevation, in feet, at end of month, 
b Change in contents, in acre-feel. 



SACRAMENTO RIVER BASIN 
1 1372000 CLEAR CREEK NEAR IGO. CA 



97 



LOCATION.--Lat 40°30'48", long 122°3r23", unsurveyed, Shasta County, Hydrologic Unit 180201 12, on left bank at old highway bridge on 
Redding-Igo Road 1 .0 mi northeast of Igo, 7.0 nii downstream from Whiskeytown Dam, 8.3 mi southwest of Redding, and 10.4 mi upstream 
from mouth. 

DRAINAGE AREA.--228 mi^ 

PERIOD OF RECORD.-October 1940 to current year. 
CHEMICAL DATA: Water years 1958-79. 
WATER TEMPERATURE: Water years 1965-79. 

REVISED RECORDS.-WSP 1345: Drainage area. WSP 1395: 194I(M). 

GAGE— Water-stage recorder. Datum of gage is 672.99 ft above sea level. 

REMARKS. "Records good. Low flow completely regulated by Whiskeytown Lake (station 1 1371700) since May 1963. Transbasin diversion from 
Trinity River through Judge Francis Carr Powerplant (station 1 1525430) to Whiskeytown Lake began in April 1963. Diversions from 
Whiskeytown Lake to Spring Creek Powerplant (station 11371600) began in December 1963. See schematic diagrams of upper Sacramento 
River and Pit and McCloud River basins. 

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 24,500 ft^/s, Dec. 21, 1955, gage height, 13.75 ft; minimum daily, 9.0 ft'/s, 
Sept. 4-7, 1950. Since completion of Whiskeytown Dam in 1963, maximum discharge. 19,200 ft^/s. Mar. 3, 1983, gage height, 12.73 ft, from 
rating curve extended above 12,000 ft'/s on basis of slope-area measurement of peak flow; minimum daily, 30 ft'/s, Oct. 10, 11, 1977. 



DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 

NOV DEC JAN FEB MAR APR MAY JUN JUL 



AUG 



1 


98 


157 


163 


8590 


326 


186 


183 


189 


62 


64 


59 


59 


2 


153 


156 


161 


8270 


301 


223 


183 


188 


63 


63 


59 


59 


3 


153 


156 


160 


4910 


283 


195 


183 


188 


91 


62 


59 


59 


i 


153 


157 


214 


1600 


276 


190 


183 


154 


121 


61 


59 


59 


5 


153 


156 


225 


500 


262 


189 


183 


122 


73 


61 


59 


59 


6 


153 


156 


186 


368 


252 


188 


181 


118 


68 


60 


59 


59 


7 


153 


156 


546 


331 


245 


187 


180 


116 


66 


60 


59 


59 


8 


155 


155 


529 


305 


237 


186 


180 


116 


64 


60 


58 


59 


9 


155 


155 


1280 


284 


232 


184 


181 


115 


62 


61 


59 


59 


10 


155 


155 


834 


270 


228 


183 


180 


114 


61 


62 


58 


59 


H 


155 


155 


412 


259 


221 


169 


179 


106 


62 


61 


58 


60 


12 


155 


155 


314 


250 


217 


166 


179 


107 


61 


61 


58 


60 


13 


154 


155 


277 


240 


212 


165 


179 


106 


60 


60 


58 


60 


14 


154 


155 


242 


233 


208 


165 


179 


105 


63 


60 


58 


64 


15 


154 


155 


224 


227 


205 


165 


178 


105 


63 


59 


58 


61 


16 


153 


157 


211 


223 


204 


212 


179 


105 


63 


59 


58 


61 


17 


153 


163 


202 


220 


205 


207 


180 


105 


63 


59 


58 


61 


18 


155 


353 


196 


215 


202 


193 


188 


103 


63 


59 


58 


57 


19 


155 


476 


191 


211 


203 


198 


201 


103 


62 


59 


59 


59 


20 


157 


308 


191 


216 


200 


195 


207 


92 


63 


60 


65 


58 


21 


157 


201 


191 


239 


198 


191 


195 


87 


61 


60 


63 


58 


22 


157 


220 


197 


304 


195 


188 


216 


72 


62 


61 


62 


58 


23 


157 


192 


190 


284 


193 


185 


229 


68 


62 


60 


62 


58 


24 


157 


179 


187 


294 


191 


183 


201 


65 


61 


61 


62 


59 


25 


157 


172 


186 


636 


191 


185 


198 


63 


61 


60 


61 


58 


26 


156 


167 


214 


1510 


190 


186 


195 


62 


62 


60 


55 


59 


27 


155 


165 


234 


747 


189 


185 


193 


62 


61 


60 


55 


59 


28 


155 


163 


437 


592 


188 


184 


193 


63 


61 


59 


55 


58 


29 


168 


161 


1470 


481 





183 


191 


62 


62 


59 


59 


58 


30 


161 


161 


1630 


404 





183 


191 


62 


69 


59 


59 


58 


31 


158 


— 


2900 


360 





182 





62 





59 


59 





TOTAL 


4764 


5572 


14594 


33573 


6254 


5781 


5668 


3185 


1976 


1869 


1828 


1774 


MEAN 


154 


186 


471 


1083 


223 


186 


189 


103 


65.9 


60.3 


59.0 


59.1 


MAX 


168 


476 


2900 


8590 


326 


223 


229 


189 


121 


64 


65 


64 


MIN 


98 


155 


160 


211 


188 


165 


178 


62 


60 


59 


55 


57 


AC -FT 


9450 


11050 


28950 


66590 


12400 


11470 


11240 


6320 


3920 


3710 


3630 


3520 



98 



SACRAMENTO RIVER BASIN 
11 372000 CLEAR CREEK NEAR IGO, CA— Continued 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1941 - 1962, BY WATER YEAR (WY) 



NOV 



DEC 



FEB 



JUN 



JUL 



AUG 



SEP 



MEAN 


76.7 


150 


597 


807 


1226 


834 


676 


347 


161 


63.4 


35.1 


32.8 


MAX 


373 


427 


2336 


2513 


5753 


2595 


2431 


773 


289 


126 


64.6 


89.7 


(WY) 


1951 


1951 


1956 


1941 


1958 


1941 


1941 


1957 


1953 


1941 


1941 


1957 


MIN 


25.8 


39.0 


47.0 


65.5 


142 


168 


172 


87.6 


66.5 


24.3 


14.3 


13.4 


(WY) 


1950 


1960 


1950 


1947 


1948 


1955 


1944 


1947 


1950 


1950 


1950 


1944 



SUMMARY STATISTICS 



WATER YEARS 1941 - 1962 



ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC -FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



413 










1092 








1941 


128 








1944 


15100 




Mar 




1941 


9. 





Sep 




1950 


9. 


5 


Sep 




1950 


24500 




Dec 


21 


1955 


13. 


75 


Dec 


21 


1955 


299000 










929 










133 










27 











STATISTICS OF MONTHLY MEAN DATA FOR WATER YEAHS 1965 - 1997, BY WATER YEAR (WY) 
OCT NOV DEC JAN FEB MAR APR MAY 



MEAN 


68.3 


139 


201 


300 


261 


335 


153 


91.6 


66.7 


56.7 


52.3 


52.1 


MAX 


317 


299 


625 


1358 


1509 


3437 


668 


419 


249 


117 


73.3 


71.6 


(WY) 


1993 


1974 


1965 


1970 


1983 


1983 


1974 


1982 


1993 


1982 


1995 


1995 


MIN 


38.8 


70.7 


94.2 


54.3 


49.8 


51.3 


50.7 


48.6 


42.9 


39.2 


37.9 


37.9 


(WY) 


1978 


1969 


1977 


1977 


1977 


1977 


1977 


1966 


1966 


1966 


1966 


1977 



SUMMARY STATISTICS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1965 - 1997 



ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC -FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



68949 






86838 










188 






238 




149 
570 

57.9 




1983 

1977 


2900 


Dec 


31 


8590 


Jan 1 


15000 


Mar 


3 1983 


52 


Aug 


11 


55 


Aug 2 6 


30 


Oct 


10 1977 


52 


Aug 


19 


57 


Aug 2 6 


31 


Oct 


5 1977 








15900 


Jan 1 


19200 


Mar 


3 1983 








12.11 


Jan 1 


12.73 


Mar 


3 1983 


136800 






172200 




107900 






343 






276 




224 






156 






156 




70 






54 






59 




49 







SACRAMENTO RIVER BASIN 



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100 SACRAMENTO RIVER BASIN 

1 1 372080 SOUTH COW CREEK CANAL DIVERSION TO SOUTH COW CREEK NEAR WHITMORE. CA 

LOCATION.--Ut 40°35'35", long 12r58'53", in NE 1/4 NW 1/4 sec.33, T.32 N , R.l W., Shasta County. Hydrologic Unit 180201 18, on left bank 
2.5 mi northeast of Cow Creek Powerplant and 4 3 mi southwest of Whitmore. 

PERIOD OF RECORD. -October 1986 to current year (operated as a low-flow station only). Unpublished records for water years 1984-86 available 
in files of the U.S. Geological Survey. 

GAGE— Water-stage recorder. Elevation of gage is 1.560 ft above sea level, from topographic map. 

REMARKS— This station records fishwater release only. The minimum release requirements are 2 ft^/s during dry years and 4.0 ft^/s during 
normal years. Flow is computed to 7.0 ftVs. See schematic diagram of Battle Creek basin. 

COOPERATION. -Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. 

DISCHARGE. CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 

DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 

5.1 5.1 4.3 4.5 4.8 4.7 4.9 4.8 4.8 4.6 

5.1 5.1 --- 4.3 4.9 4.8 4.6 4.9 4.8 4.8 4.6 

5.1 5.1 --- 4.3 4.6 4.7 4.7 4.9 4.8 4.8 4.6 

5.1 4.8 4.3 --- 4.7 4.8 5.1 4.8 4.8 4.6 

4.7 4.7 4.4 4.6 4.8 4.9 4.8 4.8 4.6 

5.1 5.2 4.4 4.8 4.4 4.6 4.6 4.9 4.8 4.8 4.6 

5.1 4.5 4.4 4.6 4.5 4.9 4.8 4.8 4.6 

5.1 4.5 4.4 4.6 4.5 4.9 4.8 4.8 4.6 

5.1 4.6 4.5 4.5 4.5 4.5 4.9 4.8 4.8 4.8 

5.1 4.4 4.4 4.6 4.4 4.9 4.8 4.8 4.9 

5.1 4.3 4.3 4.6 4.6 4.4 4.9 4.8 4.8 4.9 

5.1 5.5 4.4 4.3 4.5 4.6 4.3 4.9 4.8 4.8 4.9 

5.1 4.3 4.3 4.5 4.6 4.3 4.8 4.8 4.7 4.9 

5.1 5.3 4.3 4.3 4.6 4.6 4.8 4.8 4.6 4.7 4.9 

5.1 5.4 4.3 4.6 4.6 4.6 5.0 4.8 4.8 4.7 4.9 

5.1 5.3 4.3 4.8 4.6 4.9 4.8 4.8 4.7 4.9 

5.1 5.3 4.3 --- 4.6 4.9 4.8 4.8 4.7 4.9 

5.0 5.3 4.3 4.9 5.5 4.8 4.9 4.8 4.8 4.7 4.9 
5.3 4.3 4.8 5.4 5.7 4.9 4.8 4.8 4.7 4.9 

5.4 4.4 4.8 5.0 6.0 4.9 4.8 4.8 4.7 4.9 

5.1 5.7 4.8 4.7 4.8 5.5 4.9 4.8 4.8 4.7 4.9 
4.6 4.8 5.1 4.9 4.8 4.8 4.7 4.9 

5.6 4.3 4.7 4.7 5.1 5.1 4.8 4.8 4.6 

5.1 5.3 4.3 4.7 4.7 4.7 4.9 4.8 4.8 4.6 4.8 

5.1 5.3 4.4 4.7 4.7 4.7 4.9 4.8 4.8 4.6 4.8 

5.1 --- 4.4 4.7 4.7 4.5 4.9 4.8 4.8 4.6 4.8 

5.1 4.3 4.7 4.7 4.5 4.9 4.8 4.8 4.6 4.8 

5.1 4.6 4.6 4.4 4.9 4.8 4.8 4.6 4.8 

5.1 4.7 --- 4.5 4.6 4.9 4.8 4.8 4.6 4.8 

5.0 4.6 --- 4.7 4.7 4.9 4.8 4.8 4.6 4.8 

4.4 4.9 4.9 4.8 4.6 

--- 147.5 145.4 148.8 146.0 

--- --- --- 4.76 4.85 4.80 4.71 

--- --- 5.1 5.1 4.8 4.8 

4.3 4.8 4.8 4.6 

AC-FT 315 --- --- --- --- — — 293 288 295 290 



1 


5.1 


2 


5.1 


3 


5.1 


4 


5.1 


5 


5.1 


6 


5.1 


7 


5.2 


8 


5.2 


9 


5.2 


10 


5.2 


11 


5.1 


12 


5.2 


13 


5.2 


14 


5.2 


15 


5.1 


16 


5.1 


17 


5.1 


IB 


5.1 


19 


5.1 


20 


5.1 


21 


5.1 


22 


5.1 


23 


5.1 


24 


5.1 


25 


5.1 


26 


5.1 


27 


5.1 


28 


5.1 


29 


5.2 


30 


5.1 


31 


5.1 


TOTAL 


158.9 


MEAN 


5.13 


MAX 


5.2 


MIN 


5.1 



SACRAMENTO RIVER BASIN 101 

11372325 KILARC CANAL DIVERSION TO OLD COW CREEK NEAR WHITMORE, CA 

LOCATION.-Lat 40°4r 13", long 12r48'27", in SW 1/4 NE 1/4 sec.25, T.32 N., R. 1 E., Shasta County, Hydrologic Unit 180201 18, on right bank 
of Kilarc Canal 3.6 mi upstream of Kilarc Powerplant and 6.9 mi northeast of Whitmore. 

PERIOD OF RECORD.-October 1986 to current year (operated as a low-flow station only). Unpublished records for water years 1983-86 available 
in files of the U.S. Geological Survey. 

GAGE— Water-stage recorder and CipoUetti weir. Elevation of gage is 3,840 ft above sea level, from topographic map. 

REMARKS. -This station records fishwater release only. The minimum release requirement is 2.0 ft'/s during dry or normal years. Flow is 
computed to 5.0 ft'/s. See schematic diagram of Battle Creek basin. 

COOPERATION— Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAE.Y MEAN VALUES 

DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 



1 


3.0 


3.0 


3.0 





2.9 


3.4 


3.4 


3.9 


3.0 


3.0 


3.0 


3.0 


2 


3.0 


2.9 


3.0 





2.9 


3.5 


3.7 


3.8 


3.0 


3.0 


3.0 


3.0 


3 


3.0 


2.9 


2.9 





2.9 


3.3 


3.7 


3.8 


3.1 


3.0 


3.0 


3.0 


4 


3.0 


2.9 


3.0 


2.4 


2.9 


3.2 


3.7 


3.6 


3.5 


3.0 


3.0 


3.0 


5 


3.0 


2.9 


3.5 


3.0 


3.2 


3.3 


3.7 


3.6 


3.0 


3.0 


3.0 


3.0 


6 


3.0 


2.9 


3.0 


2.9 


3.2 


3.4 


3.6 


3.7 


3.0 


3.0 


3.0 


3.0 


7 


3.0 


2.9 


3.1 


3.2 


3.1 


3.4 


3.6 


3.7 


3.0 


3.0 


3.0 


3.0 


8 


3.0 


2.9 


3.6 


3.2 


3.1 


3.4 


3.6 


3.7 


3.0 


3.0 


3.0 


3.0 


9 


3.0 


2.9 


3.3 


3.3 


3.1 


3.3 


3.6 


3.6 


3.0 


3.0 


3.0 


3.0 


10 


3.0 


2.9 


3.3 


3.1 


3.1 


3.4 


3.5 


3.6 


3.0 


3.0 


3.0 


3.0 


11 


3.0 


2.9 


3.4 


3.1 


3.1 


3.5 


3.5 


3.6 


3.0 


3.0 


3.0 


3.0 


12 


3.0 


2.9 


3.5 


3.0 


3.0 


3.4 


3.4 


3.5 


3.0 


3.0 


3.0 


3.0 


13 


3.0 


2.9 


3.5 


3.0 


3.1 


3.2 


3.4 


3.5 


3.0 


3.0 


3.0 


3.0 


14 





2.9 


3.7 


3.0 


3.2 


3.2 


3.4 


3.3 


3.0 


3.0 


3.0 


3.0 


15 


— 


2.9 


3.6 


2.1 


3.1 


3.5 


3.4 


3.2 


3.0 


3.0 


3.0 


3.0 


16 


... 


2.9 


3.4 


2.4 


3.2 


4.2 


3.5 


3.1 


3.0 


3.0 


3.0 


2.9 


17 





3.0 


3.3 


3.1 


3.4 


4.5 


3.5 


3.0 


2.0 


3.0 


3.0 


2.9 


18 


3.0 


3.1 


3.2 


3.0 


3.1 


4.4 


3.8 


3.0 


2.5 


3.0 


3.0 


3.0 


19 


3.0 


3.2 


3.1 


3.0 


3.1 


4.4 


4.1 


3.0 


3.0 


3.0 


3.0 


2.9 


20 


3.0 


3.0 


3.1 


3.0 


3.1 


4.4 


4.2 


3.0 


3.0 


3.0 


3.1 


2.9 


21 


2.9 


3.0 


3.1 


2.9 


3.1 


4.4 


4.2 


3.0 


3.0 


3.0 


3.0 


2.9 


22 


2.5 


3.2 


3.0 


2.9 


3.1 


4.4 


4.1 


3.0 


3.0 


3.0 


3.0 


2.9 


23 


2.8 


3.0 


3.0 


2.9 


3.1 


4.4 


4.2 


3.5 


3.0 


3.0 


3.0 


2.9 


24 


3.0 


3.0 


3.0 


3.3 


3.0 


4.4 


4.1 


3.1 


3.0 


3.0 


3.0 


2.9 


25 


3.0 


3.0 


3.0 


3.9 


3.1 


4.4 


4.1 


3.0 


3.0 


3.0 


3.0 


2.9 


26 


3.0 


3.0 


3.8 


4.0 


3.1 


4.4 


4.0 


3.0 


3.0 


3.0 


3.0 


2.9 


27 


3.0 


2.9 


4.2 


3.7 


3.3 


4.4 


4.0 


3.0 


3.0 


3.0 


3.0 


2.9 


28 


3.0 


3.0 


4.4 


3.4 


3.5 


4.3 


4.0 


3.0 


3.0 


3.0 


3.0 


2.9 


29 


3.0 


2.9 


4.5 


3.1 





4.3 


4.0 


3.0 


3.0 


3.0 


3.0 


3.0 


30 


3.0 


2.9 


4.2 


3.0 





4.0 


3.9 


3.0 


3.0 


3.0 


3.0 


2.9 


31 


2.9 


--- 


— - 


2.9 


--- 


3.0 





3.0 





3.0 


3.0 





TOTAL 




as. 7 


... 


.-- 


87.1 


118.7 


112.9 


102.8 


89.1 


93.0 


93.1 


88.7 


MEAN 





2.96 








3.11 


3.83 


3.76 


3.32 


2.97 


3.00 


3.00 


2.96 


MAX 





3.2 








3.5 


4.5 


4.2 


3.9 


3.5 


3.0 


3.1 


3.0 


MIN 





2.9 








2.9 


3.0 


3.4 


3.0 


2.0 


3.0 


3.0 


2.9 


AC -FT 





176 








173 


235 


224 


204 


177 


184 


185 


176 



102 



SACRAMENTO RIVER BASIN 
1 1 372350 OLD COW CREEK BELOW DIVERSION TO OLSEN POWERPLANT, NEAR WHITMORE. CA 



LOCATION.-Ut 40°40' 10". long 121''53'27", in NW 1/4 SW 1/4 sec.32. T.33 N., R. 1 E.. Shasta County. Hydrologic Unit 180201 18. on right 
bank 1.2 mi downstream from Kilarc powerhouse. 2.2 mi upstream from Glendenning Creek, and 3.0 mi north of Whitmore. 

DRAINAGE AREA.--32,6 mi^. 

PERIOD OF RECORD.-January 1990 to September 1992. (operated as low-flow station only). October 1996 to September 1997. 

GAGE.-Water-stage recorder. Elevation of gage is 2.340 ft above sea level, from topographic map. 

REMARKS. --This station records regulated bypass flow or natural flow only. During times of powerplant operation the minimum release 
requirement is 30 ft^/s. See schematic diagram of upper Sacramento River basin. 

COOPERATION— Records were collected by Synergies Incorporated, under general supervision of the U.S. Geological Survey, in connection with 
a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 2,280 ft^/s, Jan. 1, 1997, gage-height, 7.29 ft; minimum daily, 6.9 ft'/s. 

Aug. 7, 9. 1997. 



OCT 



DISCHARGE, CUBIC FEET PER SECOND. WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 

NOV DEC JAN FEB MAR APR MAY JUN JUL 



SEP 



1 


32 


31 


30 


el510 


e95 


38 


25 


36 


19 


17 




7 


.6 


27 


2 


32 


31 


31 


e870 


e85 


36 


24 


34 


19 


16 




7 


.2 


27 


3 


32 


31 


31 


eSll 


e88 


36 


24 


33 


19 


15 




7 


.2 


27 


4 


32 


31 


34 


e356 


e71 


35 


27 


32 


26 


14 




7 


.6 


27 


5 


32 


34 


49 


e264 


e67 


34 


28 


30 


22 


14 




7, 


.2 


27 


6 


32 


32 


32 


el60 


e65 


33 


29 


30 


20 


13 




7. 


.2 


27 


7 


31 


31 


31 


e98 


e63 


33 


30 


27 


19 


12 




6. 


.9 


27 


8 


31 


31 


44 


e85 


e59 


31 


30 


27 


19 


10 




7, 


.2 


27 


9 


31 


31 


70 


e75 


e56 


30 


30 


24 


18 


10 




6. 


.9 


27 


10 


30 


31 


135 


e66 


e55 


31 


30 


23 


18 


11 




7, 


.2 


27 


11 


32 


30 


100 


e58 


50 


29 


29 


22 


17 


11 




7, 


,2 


27 


12 


33 


30 


120 


e53 


49 


28 


28 


20 


18 


10 




17 




27 


13 


29 


31 


61 


46 


49 


27 


28 


21 


19 


10 




30 




27 


14 


32 


32 


31 


46 


47 


27 


28 


26 


17 


10 




26 




27 


15 


32 


33 


32 


48 


47 


25 


28 


26 


17 


10 




27 




27 


16 


33 


33 


30 


48 


46 


30 


26 


25 


16 


10 




27 




28 


17 


34 


38 


30 


47 


48 


44 


25 


24 


15 


10 




27 




28 


18 


36 


49 


30 


45 


46 


35 


26 


23 


20 


10 




27 




28 


19 


34 


37 


31 


43 


43 


34 


31 


22 


21 


9 


.1 


27 




27 


20 


33 


39 


31 


40 


39 


33 


29 


21 


20 


9 


.1 


27 




27 


21 


30 


31 


31 


44 


40 


31 


39 


20 


19 


9 


.1 


27 




27 


22 


34 


30 


31 


ellO 


40 


30 


36 


20 


17 


8 


.3 


27 




30 


23 


35 


30 


31 


e74 


39 


29 


e63 


24 


16 


8. 


.7 


27 




33 


24 


38 


30 


31 


e53 


39 


27 


42 


23 


15 


8, 


.7 


27 




33 


25 


37 


30 


31 


ell7 


37 


25 


46 


22 


16 


8, 


.7 


27 




33 


26 


32 


30 


38 


e206 


36 


26 


40 


22 


15 


8. 


.3 


27 




33 


27 


34 


30 


34 


el52 


38 


25 


40 


22 


14 


8. 


,3 


27 




35 


28 


34 


30 


36 


el50 


38 


24 


39 


21 


14 


8. 


,3 


27 




35 


29 


38 


31 


126 


el24 





29 


37 


20 


14 


8. 


.0 


27 




35 


30 


33 


31 


356 


el07 





33 


37 


20 


16 


8. 


,3 


27 




35 


31 


32 





1296 


el02 


--- 


24 


— - 


19 


--- 


8. 


,0 


27 




— 


TOTAL 


1020 


969 


3024 


5708 


1475 


952 


974 


759 


535 


323. 


9 


611. 


4 


872 


MEAN 


32.9 


32.3 


97.5 


184 


52.7 


30.7 


32.5 


24.5 


17.8 


10. 


4 


19. 


7 


29.1 


MAX 


38 


49 


1300 


1510 


95 


44 


63 


36 


26 


17 


30 


35 


MIN 


29 


30 


30 


40 


36 


24 


24 


19 


14 


8. 





6. 


9 


27 


AC -FT 


2020 


1920 


6000 


11320 


2930 


1890 


1930 


1510 


1060 


642 


1210 


1730 


a 


13 


276 


2830 


5360 


4340 


3140 


3340 


1430 


129 
















e Estimated. 

a Discharge, in acre-feet, for Olsen Powerplant (station 1 1372330), provided by Synergies Incorporated. 



SACRAMENTO RIVER BASIN 
1 1372350 OLD COW CREEK BELOW DIVERSION TO OLSEN POWERPLANT. NEAR WHITMORE, CA— Conunued 

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1997 - 1997, BY WATER YEAR (WY) 

OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG 



103 



MEAN 


32.9 


32.3 


97.5 


184 


52.7 


30.7 


32.5 


24.5 


17.8 


10.4 


19.7 


29.1 


MAX 


32.9 


32.3 


97.5 


184 


52.7 


30.7 


32.5 


24.5 


17.8 


10.4 


19.7 


29.1 


(WY) 


1997 


1997 


1997 


1997 


1997 


1997 


1997 


1997 


1997 


1997 


1997 


1997 


MIN 


32.9 


32.3 


97.5 


184 


52.7 


30.7 


32.5 


24.5 


17.8 


10.4 


19.7 


29.1 


(WY) 


1997 


1997 


1997 


1997 


1997 


1997 


1997 


1997 


1997 


1997 


1997 


1997 



SUMMARY STATISTICS 

ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC-FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



FOR 1997 WATER YEAR 



17223, 


,3 






47, 


.2 






1510 




Jan 


1 


6. 


,9 


Aug 


7 


7. 


,1 


Aug 


5 


2280 




Jan 


1 


7. 


29 


Jan 


1 


34160 








58 








30 








13 









104 



SACRAMENTO RIVER BASIN 
1 1374000 COW CREEK NEAR MILLVILLE, CA 



LOCATION.--Lat 40''30' 19", long 122°13'56", in NE 1/4 NW 1/4 sec.32, T.31 N., R.3 W., Shasta County. Hydrologic Unit 18020101. on right 
bank 2.9 mi upstream from mouth. 4.2 mi southwest of MillviUe. and 4.3 mi downstream from Little Cow Creek. 

DRAINAGE AREA.--425 mi^. 

PERIOD OF RECORD.-October 1949 to current year. 
CHEMIC/>lL DATA: Water years 1959-66. 

WATER TEMPERATURE; Water years 1966-71, 1973-76, 1978-79. 
SEDIMENT DATA: Water year 1978. 

REVISED RECORDS.-WSP 1 93 1 : Drainage area. 

GAGE— Water-stage recorder and crest-stage gage. Datum of gage is 385.7 ft above sea level. Prior to June 11, 1987, at datum 3.00 ft higher. 

REMARKS— Records good. Numerous small diversions upstream from station for irrigation. See schematic diagrams of upper Sacramento River 
and Battle Creek basins. 

EXTREMES FOR PERIOD OF RECORD -Maximum discharge, 48,700 ft'/s, Nov. 16, 1981, gage height, 24.22 ft, present datum; maximum gage 
height, 24.55 ft, Dec. 27, 1951, present datum; minimum daily, 0.02 ft^/s, July 29. 1977. 

EXTREMES OUTSIDE PERIOD OF RECORD.-Flood of 1937 or 1940 reached a stage of 26.8 ft from floodmarks, present datum; probable 

backwater effect from high flows on the Sacramento River. 

EXTREMES FOR CURRENT YEAR.-Peak discharges greater than base discharge of 13.900 ft^/s. or maximum: 

Discharge Gage height Discharge 

Date Time (ft^/s) (ft) Date Time (ft^/s) 



Gage height 
(ft) 



Jan. 2 
Jan. 22 



0245 
1100 



37,700 
18,400 



21.58 

15.90 



Jan. 26 



0230 



18.300 



15.88 



DISCHARGE. CUBIC FEET PER SECOND. WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



DAY 



NOV 



DEC 



JAN 



FEB 



HAR 



APR 



HAY 



JUN 



JUL 



1 


52 


122 


177 


15600 


1650 


367 


373 


371 


121 


97 


34 


44 


2 


53 


116 


185 


15900 


1390 


476 


356 


327 


117 


89 


29 


47 


3 


59 


115 


158 


7780 


1240 


410 


344 


302 


130 


78 


29 


47 


4 


59 


114 


189 


3230 


1190 


402 


328 


275 


293 


72 


31 


41 


5 


58 


118 


2950 


2260 


1110 


398 


308 


264 


219 


67 


29 


42 


6 


58 


116 


758 


1730 


996 


385 


299 


258 


165 


67 


29 


42 


7 


57 


111 


1130 


1440 


926 


328 


321 


252 


141 


66 


31 


40 


8 


54 


112 


2200 


1240 


871 


338 


299 


236 


125 


61 


28 


41 


9 


53 


112 


3180 


1090 


792 


325 


297 


230 


130 


54 


25 


43 


10 


56 


112 


4120 


982 


790 


316 


305 


214 


133 


58 


26 


42 


11 


56 


113 


2830 


897 


705 


320 


282 


206 


122 


53 


35 


47 


12 


53 


114 


3170 


837 


666 


333 


258 


201 


121 


48 


33 


45 


13 


60 


115 


2990 


740 


613 


325 


252 


192 


123 


48 


32 


43 


14 


58 


114 


1230 


692 


578 


327 


245 


185 


113 


48 


30 


62 


15 


59 


112 


777 


669 


555 


336 


234 


176 


109 


45 


29 


153 


16 


62 


116 


587 


644 


535 


558 


215 


173 


103 


46 


29 


104 


17 


63 


154 


469 


620 


787 


2250 


213 


166 


96 


45 


33 


88 


18 


76 


296 


386 


590 


641 


969 


231 


163 


89 


43 


35 


98 


19 


100 


263 


339 


571 


570 


697 


556 


158 


89 


39 


33 


91 


20 


95 


492 


306 


605 


566 


627 


568 


142 


84 


40 


53 


80 


21 


92 


241 


367 


2800 


507 


595 


752 


139 


81 


43 


74 


79 


22 


95 


528 


1170 


12600 


480 


545 


749 


138 


81 


40 


63 


76 


23 


98 


420 


944 


3410 


443 


511 


1810 


172 


76 


35 


52 


68 


24 


109 


244 


583 


2100 


424 


470 


822 


213 


72 


32 


55 


62 


25 


119 


202 


450 


9320 


405 


454 


628 


165 


71 


31 


57 


60 


26 


117 


175 


3670 


10600 


393 


440 


560 


154 


64 


33 


50 


57 


27 


105 


160 


3320 


4800 


388 


436 


489 


152 


65 


31 


48 


52 


28 


104 


152 


2290 


5530 


391 


416 


442 


149 


69 


37 


45 


50 


29 


148 


147 


4020 


2920 





390 


419 


141 


69 


39 


45 


50 


30 


208 


140 


6690 


2050 





387 


388 


131 


82 


36 


43 


47 


31 


136 





12000 


1780 





409 


--- 


116 


--- 


36 


43 


- — 


TOTAL 


2572 


5446 


63635 


116027 


20602 


15540 


13343 


6161 


3353 


1557 


1208 


1841 


MEAN 


83.0 


182 


2053 


3743 


736 


501 


445 


199 


112 


50.2 


39.0 


61.4 


MAX 


208 


528 


12000 


15900 


1650 


2250 


1810 


371 


293 


97 


74 


153 


MIN 


52 


111 


158 


571 


388 


316 


213 


116 


64 


31 


25 


40 


AC -FT 


5100 


10800 


126200 


230100 


40860 


30820 


26470 


12220 


6650 


3090 


2400 


3650 



SACRAMENTO RIVER BASIN 



105 



11 374000 COW CREEK NEAR MILLVILLE, CA— Continued 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1950 - 1997, BY WATER YEAR (WY) 
OCT NOV DEC JAN FEB MAR APR MAY 



JUN 



JUL 



AUG 



MEAN 


126 


472 


1147 


1719 


1573 


1370 


849 


523 


213 


59.5 


36.1 


46.8 


MAX 


1057 


2539 


3929 


5593 


4634 


5275 


3012 


1795 


952 


218 


115 


130 


(WY) 


1963 


1982 


1984 


1970 


1986 


1983 


1963 


1967 


1993 


1983 


1983 


1983 


MIN 


19.4 


58.3 


76.1 


80.7 


103 


118 


63.0 


54.1 


13.5 


.63 


.74 


3.19 


(WY) 


1992 


1992 


1991 


1991 


1977 


1977 


1977 


1992 


1992 


1977 


1977 


1992 



SUMMARY STATISTICS 

ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC -FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1950 - 1997 



312004 






251285 










852 






688 






674 

1505 
66.8 


1983 
1977 


12000 


Dec 


31 


15900 


Jan 


2 


32500 


Dec 27 1951 


38 


Aug 


20 


25 


Aug 


9 


.02 


Jul 29 1977 


40 


Aug 


11 


28 


Aug 


4 


.09 


Jul 23 1977 








37700 


Jan 


2 


48700 


Nov 16 1981 








21.58 


Jan 


2 


24.55 


Dec 27 1951 


618900 






498400 






488500 




2280 






1240 






1580 




308 






165 






186 




50 






42 






24 





106 



SACRAMENTO RIVER BASIN 
1 1376000 COTTONWOOD CREEK NEAR COTTONWOOD. CA 



LOCATION.-Lat 40°23' 14", long 122''14' 15", in NE 1/4 NE 1/4 sec.7. T.29 N.. R.3 W.. Shasta County, Hydrologic Unit 18020102, on left bank 
2.2 mi east of Cottonwood and 2.5 mi upstream from mouth. 

DRAINAGE AREA -927 mil 

PERIOD OF RECORD.-October 1940 to current year. 
CHEMICAL DATA; Water years 1982-85. 
WATER TEMPERATURE: Water years 1963-67, 1977-85. 
SEDIMENT DATA: Water years 1957-67, 1977-85. 

REVISED RECORDS -WSP 1345: 1943, 1944(M), 1946-47, 1949(M), 1951-52. WSP 1931: Drainage area. 

GAGE— Water-stage recorder and crest-stage gage. Datum of gage is 363.80 ft above sea level (levels by U.S. Army Corps of Engineers). Prior to 
July 26, 1 963, on right bank at datum 3.59 ft higher. July 26, 1963, to Sept. 1 3. 1972, at site 250 ft dovi^nstream on right bank at present datum. 
Sept. 21, 1967, to Jan. 14, 1968, supplementary gage at a site 1,450 ft downstream on right bank at datum 2.35 ft higher 

REMARKS— Records fair. Small diversions for irrigation upstream from station. At times during irrigation season, Cottonwood Creek receives 
water from the Sacramento River by way of Anderson-Cononwood Irrigation District Canal. See schematic diagrams of upper Sacramento 
River and Battle Creek basins. 

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 86,000 ft^/s. Mar. 1 , 1 983, gage height, 2 1 59 ft from rating cui^e extended above 
34,000 ft /s on basis of runoff comparisons with upstream stations then in use; minimum, 15 ft^s several days during September 1945. 

EXTREMES FOR CURRENT YEAR -Peak discharges greater than base discharge of 1 1,000 ft'/s, or maximum: 

Discharge Gage height Discharge Gage height 

(ft) Date Time (ft'/s) (ft) 



Date 

Jan. 01 



Time 

1015 



(ftVs) 
40,600 



16.76 



Date 
Jan. 25 



0515 



(ft'/s) 
12,500 



11.47 



DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



NOV 



DEC 



JAN 



FEB 



MAR 



APR 



MAY 



JUN 



JUL 



SEP 



1 


76 


128 


223 


32300 


3990 


701 


451 


390 


250 


144 


69 


73 


2 


80 


119 


243 


19100 


3530 


725 


436 


378 


245 


129 


55 


69 


3 


79 


112 


251 


9310 


3080 


713 


425 


367 


256 


133 


55 


65 


4 


74 


109 


239 


6280 


2770 


652 


414 


356 


427 


130 


70 


65 


5 


79 


104 


1320 


4840 


2390 


620 


404 


348 


330 


122 


60 


58 


6 


65 


100 


1140 


4050 


2010 


612 


392 


349 


278 


117 


51 


55 


7 


66 


99 


767 


3570 


2000 


584 


388 


347 


256 


109 


51 


50 


8 


70 


98 


2400 


3170 


1880 


560 


380 


360 


241 


104 


53 


50 


9 


62 


97 


2470 


2830 


1730 


546 


368 


364 


241 


95 


56 


53 


10 


64 


95 


6160 


2560 


1660 


534 


359 


356 


235 


98 


61 


65 


11 


88 


96 


3410 


2350 


1550 


527 


350 


320 


240 


85 


55 


62 


12 


103 


95 


2530 


2190 


1460 


514 


343 


327 


235 


78 


59 


64 


13 


100 


95 


2050 


2020 


1360 


498 


361 


315 


202 


79 


60 


70 


14 


87 


93 


1490 


1880 


1280 


489 


346 


301 


193 


83 


52 


96 


15 


84 


93 


1180 


1810 


1220 


479 


339 


286 


188 


83 


47 


116 


16 


90 


96 


997 


1740 


1180 


548 


332 


283 


180 


78 


44 


105 


17 


84 


126 


873 


1680 


1180 


1100 


326 


280 


182 


82 


50 


108 


18 


78 


188 


776 


1610 


1130 


842 


332 


288 


169 


80 


49 


105 


19 


100 


413 


702 


1570 


1060 


736 


463 


270 


160 


77 


46 


90 


20 


103 


692 


650 


1540 


1040 


694 


503 


263 


146 


73 


48 


86 


21 


93 


454 


691 


1570 


991 


685 


512 


282 


136 


77 


49 


80 


22 


91 


402 


704 


2120 


951 


647 


516 


282 


134 


68 


63 


68 


23 


104 


461 


807 


3170 


902 


621 


607 


298 


134 


61 


67 


71 


24 


108 


371 


691 


2340 


855 


591 


592 


400 


125 


63 


60 


75 


25 


103 


320 


645 


9000 


819 


571 


562 


321 


114 


62 


58 


76 


26 


127 


286 


880 


10000 


790 


549 


520 


285 


105 


63 


57 


71 


27 


116 


260 


2370 


6580 


767 


528 


494 


281 


102 


61 


51 


68 


28 


79 


239 


2200 


6800 


737 


513 


499 


290 


100 


64 


52 


65 


29 


98 


226 


3840 


5980 





501 


464 


269 


100 


61 


58 


64 


30 


169 


221 


8210 


4630 





487 


415 


259 


117 


65 


62 


60 


31 


165 





17800 


4120 





471 


--- 


241 


... 


73 


68 


... 


TOTAL 


2885 


6288 


68709 


162710 


44312 


18838 


12893 


9756 


5821 


2697 


1736 


2203 


MEAN 


93.1 


210 


2216 


5249 


1583 


608 


430 


315 


194 


87.0 


56.0 


73.4 


MAX 


169 


692 


17800 


32300 


3990 


1100 


607 


400 


427 


144 


70 


116 


MIN 


62 


93 


223 


1540 


737 


471 


326 


241 


100 


61 


44 


50 


AC -FT 


5720 


12470 


136300 


322700 


87890 


37370 


25570 


19350 


11550 


5350 


3440 


4370 



SACRAMENTO RIVER BASIN 
1 1376000 COTTONWOOD CREEK NEAR COTTONWOOD, CA— Continued 

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1941 - 1997, BY WATER YEAR (WY) 

OCT NOV DEC JAN FEB MAR APR MAY JUN 



AUG 



107 



MEAN 


129 


347 


1229 


2169 


2279 


1902 


1158 


619 


296 


114 


69.2 


76.8 


MAX 


805 


1829 


5428 


9193 


10810 


10770 


4270 


2447 


979 


365 


169 


164 


(WY) 


1958 


1985 


1984 


1995 


1958 


1983 


1941 


1983 


1993 


1983 


1983 


1983 


MIN 


50.6 


52.2 


49.8 


60.3 


76.3 


146 


136 


165 


74.5 


36.8 


26.4 


30.8 


(WY) 


1995 


1991 


1991 


1991 


1977 


1977 


1977 


1977 


1977 


1994 


1945 


1945 



SUMMARY STATISTICS 

ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC -FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1941 - 1997 



437819 






338848 












1196 






928 






859 
2714 
94.4 




1983 
1977 


17800 


Dec 


31 


32300 


Jan 


1 


54300 


Jan 


16 1974 


44 


Sep 


3 


44 


Aug 


16 


15 


Sep 


7 1945 


55 


Aug 


31 


48 


Aug 


15 


16 


Sep 


4 1945 








40600 


Jan 


1 


86000 


Mar 


1 1983 








16.76 


Jan 


1 


21.59 


Mar 


1 1983 


868400 






672100 






622500 






3650 






2150 






2020 






445 






280 






222 






69 






62 






57 







108 SACRAMENTO RIVER BASIN 

1 1 3760 1 5 NORTH FORK BATTLE CREEK BELOW NORTH BATTLE CREEK DAM, NEAR MANZANITA LAKE, CA 

LOCATION.-Ut40°36'10", long 121°39'17", in SE 1/4 SE 1/4 sec.20, T.32 N, R.3 E, Shasta County, Hydrologic Unit 18020118, Lassen 
National Forest, on left bank 300 ft downstream from North Battle Creek Dam and 6.7 mi northwest of Manzanita Lake. 

DRAINAGE AREA.--6.40 mi'. 

PERIOD OF RECORD.-October 1 987 to cunent year (operated as a low-flow station only). Unpublished records for water years 1978-87 available 
in files of the U.S. Geological Survey. Fragmentary records for water years 1920-77 in files of the Pacific Gas & Electric Co. 

GAGE.-Water-stage recorder and a compound weir consisting of a 5-ft rectangular and V-notch weir. Elevation of gage is 5,560 ft above sea level, 
from topographic map 

REMARKS. --This station records fishwater release only. The minimum release requirement is 0.30 ft^/s Oct. 1 -3 1 and Apr. 1 to Sept. 30. No license 
requirement Nov. 1 to Mar. 31, records not computed. Each fall. North Battle Creek Reservoir is drafted and flows may exceed the rated limits 
of the weirs; flow is computed to 50 ft /s. See schematic diagram of Battle Creek basin. 

COOPERATION -Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



NOV 



DEC 



JAN 



FEB 



MAR 



APR 



MAY 



JlfflJ 



JUL 



AUG 



SEP 



1 


8.0 


2 


9.9 


3 


9.8 


4 


9.7 


5 


9.7 


6 


9.7 


7 


9.8 


e 


10 


9 


10 


10 


9.9 


11 


9.7 


12 


9.7 


13 


9.7 


14 


9.7 


15 


13 


16 


15 


17 


15 


18 


15 


19 


15 


20 


14 


21 


14 


22 


14 


23 


14 


24 


14 


25 


14 


26 


14 


27 


13 


28 


13 


29 


9.0 


30 


5.8 


31 


5.8 


TOTAL 


352.9 


MEAN 


11.4 


MAX 


15 


MIN 


5.8 


AC -FT 


700 



8.5 


14 


1.6 


1.2 


1.2 


1.4 


7.5 


13 


1.4 


1.2 


1.1 


1.4 


5.0 


12 


1.5 


1.7 


1.2 


1.4 


2.8 


11 


9.0 


1.9 


1.1 


1.2 


2.8 


10 


6.7 


1.9 


1.4 


1.2 


2.8 


6.1 


3.1 


1.9 


1.9 


1.2 


2.8 


2.8 


3.1 


1.9 


1.7 


1.2 


2.7 


2.8 


3.1 


1.9 


1.7 


1.1 


2.7 


2.8 


2.2 


1.8 


1.6 


.98 


2.6 


2.9 


1.4 


1.8 


1.6 


.94 


2.6 


2.9 


1.4 


1.8 


1.3 


3.4 


2.5 


3.0 


1.5 


1.8 


1.1 


5.2 


2.5 


2.5 


1.9 


1.7 


1.4 


5.2 


2.5 


2.1 


1.4 


1.8 


1.5 


5.0 


3.0 


2.3 


1.2 


1.7 


1.4 


5.0 


3.1 


2.6 


1.2 


1.6 


1.3 


5.2 


3.1 


2.8 


1.1 


1.4 


1.1 


5.0 


3.2 


4.3 


1.3 


1.4 


.98 


5.0 


3.8 


4.6 


1.4 


1.4 


.93 


4.8 


23 


3.2 


1.3 


1.5 


1.3 


5.0 


17 


2.7 


1.1 


1.5 


1.5 


5.0 


12 


2.6 


1.1 


1.5 


1.4 


5.0 


35 


7.6 


1.0 


1.4 


1.5 


5.0 


27 


8.4 


1.4 


1.4 


1.4 


5.0 


22 


5.8 


1.6 


1.1 


1.4 


5.0 


20 


4.0 


1.6 


1.1 


1.3 


4.9 


19 


2.4 


1.3 


1.0 


1.4 


4.8 


19 


1.5 


1.2 


1.1 


1.2 


4.8 


17 


1.4 


1.2 


1.3 


1.2 


4.8 


16 


1.4 


1.1 


1.2 


1.1 


7.8 





1.6 





1.3 


1.3 





293.5 


147.1 


59.4 


47.2 


41.51 


112.92 


9.78 


4.75 


1.98 


1.52 


1.34 


3.76 


35 


14 


9.0 


1.9 


1.9 


7.8 


2.5 


1.4 


1.0 


1.0 


.93 


.94 


582 


292 


118 


94 


82 


224 



SACRAMENTO RIVER BASIN 
1 1376025 NORTH FORK BATTLE CREEK BELOW MCCUMBER DAM, NEAR MANZANITA LAKE, CA 



109 



LOCATION.--Lat 40°32' 15", long 12r43'53", in SW 1/4 SE 1/4 sec.15, T.31 N., R.2 E., Shasta County, Hydrologic Unit 180201 18, on right bank 
300 ft downstream from McCumber Dam, 3.0 mi northwest of Viola, and 9.0 mi west of Manzanita Lake. 

DRAINAGE AREA.--27.6 mi^. 

PERIOD OF RECORD.--October 1 987 to current year (operated as a low-flow station only). Unpublished records for water years 1978-87 available 
in files of the U.S. Geological Survey. 

GAGE.-Water-stage recorder and V-notch weir. Elevation of gage is 4,080 fi above sea level, from topographic map. 

REMARKS. --This station records fishwater release only. Prior to water year 1995 flow computed to 21 1 ft'/s. The minimum release requirement 
is 0.30 ft^/s at all times; flow is computed to 800 ft-'/s. See schematic diagram of Battle Creek basin. 

COOPERATION— Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



OCT 



NOV 



DEC 



JAN 



FEB 



MAR 



APR 



MAY 



JUN 



JUL 



AUG 



SEP 



1 


34 


35 


29 


713 


99 


51 


57 


59 


34 


32 


25 


21 


2 


37 


35 


33 


578 


97 


51 


59 


56 


34 


31 


25 


21 


3 


41 


35 


33 


382 


94 


63 


47 


53 


39 


30 


24 


21 


4 


34 


31 


26 


298 


92 


71 


49 


52 


52 


29 


24 


20 


5 


32 


27 


31 


215 


91 


69 


47 


50 


43 


28 


24 


20 


6 


33 


27 


51 


159 


90 


63 


46 


49 


36 


29 


24 


19 


7 


32 


27 


58 


135 


90 


55 


46 


37 


34 


28 


24 


19 


8 


32 


25 


57 


109 


89 


55 


46 


38 


35 


28 


25 


20 


9 


32 


22 


57 


101 


88 


55 


46 


38 


37 


29 


24 


22 


10 


32 


22 


63 


97 


87 


55 


42 


38 


35 


29 


24 


21 


11 


32 


22 


67 


94 


86 


47 


39 


38 


35 


28 


25 


22 


12 


32 


23 


69 


96 


85 


43 


38 


37 


36 


28 


24 


24 


13 


32 


23 


69 


96 


71 


44 


41 


37 


34 


28 


24 


24 


14 


37 


23 


68 


94 


63 


45 


41 


36 


32 


27 


23 


30 


15 


40 


23 


66 


93 


64 


45 


41 


35 


31 


27 


23 


31 


16 


41 


23 


57 


91 


69 


45 


41 


34 


28 


27 


23 


27 


17 


41 


23 


50 


65 


73 


47 


40 


34 


28 


28 


21 


30 


18 


41 


40 


49 


58 


74 


49 


47 


34 


28 


27 


21 


31 


19 


41 


40 


38 


63 


74 


64 


61 


35 


26 


27 


22 


27 


20 


41 


40 


36 


67 


73 


64 


72 


35 


30 


26 


29 


26 


21 


41 


36 


39 


70 


73 


64 


93 


34 


31 


26 


24 


26 


22 


41 


33 


40 


77 


72 


64 


70 


34 


31 


26 


23 


26 


23 


41 


35 


35 


81 


72 


64 


105 


56 


31 


26 


23 


25 


24 


41 


36 


29 


79 


70 


64 


85 


42 


31 


26 


23 


26 


25 


41 


38 


30 


80 


70 


59 


75 


42 


31 


26 


22 


26 


26 


40 


38 


31 


84 


69 


56 


67 


40 


31 


26 


21 


32 


27 


41 


27 


44 


87 


57 


56 


65 


36 


30 


25 


21 


35 


28 


42 


21 


81 


126 


50 


57 


65 


36 


30 


25 


21 


35 


29 


42 


21 


96 


124 





64 


63 


36 


30 


25 


20 


32 


30 


39 


23 


97 


110 


... 


57 


61 


34 


33 


25 


20 


29 


31 


35 


--- 


572 


102 





51 





34 





25 


20 





TOTAL 


1161 


874 


2101 


4624 


2182 


1737 


1695 


1249 


996 


847 


716 


768 


MEAN 


37.5 


29.1 


67.8 


149 


77.9 


56.0 


56.5 


40.3 


33.2 


27.3 


23.1 


25.6 


MAX 


42 


40 


572 


713 


99 


71 


105 


59 


52 


32 


29 


35 


MIN 


32 


21 


26 


58 


50 


43 


38 


34 


26 


25 


20 


19 


AC -FT 


2300 


1730 


4170 


9170 


4330 


3450 


3360 


2480 


1980 


1680 


1420 


1520 


a 


126 


114 


526 


436 


166 


428 


428 


436 


436 


436 


436 


349 



a Contents, in acre-feet, at end of month for McCumber Reservoir (station 1 1376020), provided by Pacific Gas & Electric. 



1 10 SACRAMENTO RIVER BASIN 

POWERPLANTS IN BATTLE CREEK BASIN 

1 1376043 VOLTA NO. ! POWERPLANT NEAR MANTON, CA, in NW 1/4 NE 1/4 sec.l6, T.30 N.. R.l E., Shasta County. Hydrologic Unit 
1 8020 1 1 8, 1 .7 mi north of Manion. Powerplant consists of one unit with a total of 8,550 KW normal operating capacity. See schematic diagram 
of Battle Creek basin. 

1 1376046 VOLTA NO. 2 POWERPLANT NEAR MANTON, CA, in NE 1/4 SW 1/4 sec.l6, T.30 N., R.l E., Shasta County, Hydrologic Unit 
180201 18, 1.2 mi northeast of Manton. Powerplant consists of one unit with a total of 956 KW normal operating capacity. See schetnatic 
diagram of Battle Creek basin. 

1 1376410 SOUTH POWERPLANT NEAR MANTON, CA. in NE 1/4 SE 1/4 sec.5, T.29 N., R 1 E.. Tehama County. Hydrologic Unit 18020118, 
2.7 mi south of Manton. Powerplant consists of one unit with a total of 6,750 KW normal operating capacity. See schematic diagram of Battle 
Creek basin. 

1 1 376430 INSKIP POWERPLANT NEAR MANTON, CA, in NE 1/4 NW 1/4 sec.3, T.29 N, R. 1 W., Tehama County. Hydrologic Unit 180201 18, 
5.5 mi southwest of Manton. Powerplant consists of one unit with a total of 7.650 KW normal operating capacity. See schematic diagram of 
Battle Creek basin. 

1 1 376458 COLEMAN POWERPLANT NEAR COTTONWOOD. CA, in SW 1/4 SW 1/4 sec.32, T.30 N., R.2 W., Shasta County, Hydrologic Unit 
18020006, 8.5 mi east of Cottonwood. Powerplant consists of one unit with a total of 12,150 KW normal operating capacity. See schematic 
diagram of Battle Creek basin. 

MONTLY DISCHARGE, IN ACRE-FEET, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

Date Volta No. 1 Volta No. 2 South Inskip Coleman 

Oct 4,980 6,080 1 1,790 12,990 13,970 

Nov 4,520 5,530 12,040 13,460 15,000 

Dec 5,710 6.790 12.620 14.690 18.760 

Jan 6,980 7,270 12,550 250 17,850 

Feb 6,400 6,780 12,060 1,830 17.900 

Mar 7,200 7.500 12,280 17,530 19,940 

Apr 6,630 7,310 12,860 16,790 18,970 

May 6,330 7,330 13,380 17,540 19,080 

June 5,460 6,580 12,730 16,460 17,160 

July 4,470 5,450 1 1,970 14,040 14,490 

Aug 4,220 5,180 11,040 12.250 9,800 

Sept 4,140 5.030 9.630 11,760 

Note.-Records were provided by Pacific Gas & Electric Co., in connection with a Federal Energy Regulatory Commission project. 

Unpublished records for water years 1979-86 available in files of U.S.Geological Survey. Fragmentary records prior to water year 
1979 available in files of Pacific Gas & Electric. 



SACRAMENTO RIVER BASIN 
1 1376050 NORTH FORK BATTLE CREEK BELOW DIVERSION TO KESWICK DITCH, NEAR MANTON, CA 



HI 



LOCATION.--Ut 40°30'0O", long 12r48'29". in NW 1/4 NE 1/4 sec.36, T.31 N.. R.l E., Shasta County, Hydrologic Unit 18020118, on right 
bank 4.2 mi east of Shingletown and 5.5 mi northeast of Manton. 

PERIOD OF RECORD.-October 1986 to current year (operated as a low-flow station only). Unpublished records for water years 1978-86 available 
in files of the U.S. Geological Survey. 

GAGE. -Water-stage recorder and Parshall flume. Elevation of gage is 3,600 ft above sea level, from topographic map. 

REMARKS— This station records fishwater release only. The minimum release requirement is 3.0 ft'/s at all times; flow is computed to 5.6 ft^/s. 
See schematic diagram of Battle Creek basin. 

COOPERATION.-Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Cortunission project. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



OCT 



NOV 



DEC 



JAN 



FEB 



MAR 



APR 



MAY 



JUN 



jxn. 



1 


3.5 


3.5 


3.8 





4.3 


4.8 


4.9 


4.3 


3.5 


3.6 


3.5 


3.4 


2 


3.5 


3.5 


3.8 





4.3 


4.8 


4.9 


4.3 


3.5 


3.6 


3.5 


3.4 


3 


3.7 


3.5 


3.8 





4.4 


4.8 


4.8 


4.3 


3.5 


3.6 


3.5 


3.4 


4 


3.6 


3.5 


3.8 





4.4 


4.8 


4.9 


4.3 


3.6 


3.5 


3.5 


3.5 


5 


3.5 


3.4 


4.0 





4.6 


4.8 


4.8 


4.3 


3.5 


3.5 


3.5 


3.5 


6 


3.5 


3.5 


4.1 





4.6 


4.8 


4.8 


4.3 


3.5 


3.5 


3.5 


3.5 


7 


3.5 


3.6 


4.1 





4.6 


4.8 


4.8 


4.0 


3.5 


3.5 


3.5 


3.5 


8 


3.6 


3.5 


4.1 





4.6 


4.8 


4.2 


3.6 


3.5 


3.5 


3.5 


3.5 


9 


3.6 


3.4 


4.1 


4.1 


4.6 


4.8 


3.6 


3.6 


3.5 


3.6 


3.5 


3.5 


10 


3.6 


3.5 


4.0 


4.9 


4.7 


4.8 


3.6 


3.6 


3.5 


3.6 


3.5 


3.5 


11 


3.6 


3.5 


3.9 


4.9 


4.7 


4.8 


3.6 


3.6 


3.5 


3.6 


3.5 


3.5 


12 


3.6 


3.5 


4.0 


4.9 


4.7 


4.8 


3.6 


3.5 


3.5 


3.5 


3.5 


3.6 


13 


3.6 


3.5 


4.0 


4.9 


4.7 


4.9 


3.6 


3.5 


3.5 


3.5 


3.5 


3.6 


14 


3.6 


3.5 


4.0 


4.8 


4.8 


4.9 


3.6 


3.6 


3.5 


3.5 


3.5 


3.7 


15 


3.6 


3.5 


4.0 


4.8 


4.8 


5.0 


3.6 


3.6 


3.5 


3.5 


3.5 


3.7 


16 


3.6 


3.5 


4.0 


4.8 


4.8 


5.0 


3.6 


3.6 


3.5 


3.4 


3.5 


3.6 


17 


3.6 


3.6 


3.7 


4.7 


4.8 


5.0 


3.6 


3.6 


3.5 


3.4 


3.5 


3.6 


18 


3.6 


3.8 


3.6 


4.7 


4.7 


4.9 


3.6 


3.6 


3.5 


3.4 


3.5 


3.7 


19 


3.6 


3.9 


3.4 


4.8 


4.7 


5.0 


3.6 


3.6 


3.4 


3.4 


3.5 


3.6 


20 


3.6 


3.9 


3.4 


4.8 


4 .7 


5.0 


3.6 


3.6 


3.5 


3.4 


3.6 


3.6 


21 


3.6 


3.9 


3.5 


4.8 


4.7 


4.9 


3.5 


3.6 


3.5 





3.5 


3.6 


22 


3.6 


3.9 


3.5 


4.5 


4.7 


4.9 


3.5 


3.6 


3.5 





3.5 


3.6 


23 


3.6 


3.9 


3.4 


4.4 


4.7 


4.9 


3.4 


3.6 


3.5 





3.5 


3.6 


24 


3.6 


3.9 


3.4 


4.1 


4.7 


4.9 


3.9 


3.5 


3.5 


3.5 


3.5 


3.6 


25 


3.6 


3.9 


3.5 


3.9 


4.7 


4.9 


4.3 


3.5 


3.5 


3.6 


3.4 


3.6 


26 


3.6 


3.9 


3.6 


3.9 


4.8 


4.8 


4.3 


3.5 


3.5 


3.6 


3.4 


3.6 


27 


3.5 


3.7 


3.7 


3.9 


4.8 


4.8 


4.3 


3.4 


3.5 


3.6 


3.4 


3.6 


28 


3.6 


3.6 


3.3 


4.1 


4.8 


4.9 


4.3 


3.5 


3.5 


3.6 


3.4 


3.5 


29 


3.6 


3.6 


3.1 


4.2 





4.9 


4.3 


3.5 


3.5 


3.5 


3.4 


3.5 


30 


3.5 


3.6 


3.2 


4.2 





4.9 


4.3 


3.5 


3.6 


3.5 


3.4 


3.5 


31 


3.5 





3.9 


4.2 





4.9 





3.5 





3.5 


3.4 





TOTAL 


110.9 


109.0 


115.7 





130.4 


151.0 


121.4 


115.1 


105.1 





107.9 


106.6 


MEAN 


3.58 


3.63 


3.73 





4.66 


4.87 


4.05 


3.71 


3.50 





3.48 


3.55 


MAX 


3.7 


3.9 


4.1 





4.8 


5.0 


4.9 


4.3 


3.6 





3.6 


3.7 


MIN 


3.5 


3.4 


3.1 





4.3 


4.8 


3.4 


3.4 


3.4 





3.4 


3.4 


AC-PT 


220 


216 


229 





259 


300 


241 


228 


208 





214 


211 



NOTE: Canal was out of service Jan. 1-8 and July 21-23 and all flow remained in the natural channel. 



1 1 2 SACRAMENTO RIVER BASIN 

1 1376140 NORTH FORK BATTLE CREEK BELOW DIVERSION TO CROSS COUNTRY CANAL. NEAR MANTON, CA 

LOCATION.-Ut 40°27' 16", long 12r5r35 ", in SW 1/4 NW 1/4 sec.15, T.30 N., R.l E., Shasta County, Hydrologic Unit 180201 18, on left bank 
at diversion dam 800 ft downstream (revised) from Volta No. 2 Powerplant and 1 .4 mi northeast of Manton. 

DRAINAGE AREA.-- 133 mil 

PERIOD OF RECORD.-October 1987 to current year (operated as a low-flow station only). Unpublished records for water years 1978-87 available 
in files of the U.S. Geological Survey. Fragmentary records for water year 1977 in files of Pacific Gas & Electric Co. 

GAGE. -Water-stage recorder and metal Alaskan fishladder. Elevation of gage is 2,240 ft above sea level, from topographic map. 

REMARKS— This station records fishwater release only. The minimum release requirement is 3.0 ft^/s at all times; flow is computed to 6.8 ft^/s. 
See schematic diagram of Battle Creek basin. 

COOPERATION— Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological SuA'ey. in connection 
with a Federal Energy Regulatory Commission project 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 

DAY OCT NOV DEC JAN FEB MAR APR MAY JXTO JUL AUG SEP 



1 

2 

3 
4 
5 

6 


5.1 
5.3 
5.3 
5.3 
5.4 

5.3 











--- 


6.8 


— 








6.7 






6.1 


7 


5.3 











5.8 


8 


5.4 


6.3 








5.4 


9 


5.4 


6.8 








4.9 


10 


5.5 











4.7 


11 


5.6 











4.9 


12 


5.7 


6.6 


6.6 


5.6 


4.5 


13 


5.9 





6.0 


1.7 





14 


5.9 





5.5 


1.1 


5.6 


15 


5.9 


6.1 


5.0 


1.2 


5.2 


16 





6.2 


5.3 


4.0 


5.2 


17 


6.4 





6.1 








18 


6.1 





6.7 


5.6 


6.0 


19 


6.0 








5.7 


5.9 


20 


5.3 








5.8 


5.6 


21 


5.0 











5.4 


22 


5.3 











5.2 


23 


5.6 











4.8 


24 


6.2 











4.3 


25 


6.4 











3.9 


26 














4.3 


27 














5.6 


28 


6.2 














29 





6.8 





4.6 





30 











4.2 





31 








--- 


2.6 


- — 


TOTAL 

















MEAN 

















MAX 

















MIN 

















AC -FT 
























4.7 


4.7 





6.2 


4.7 


4.7 





5.7 


4.7 


4.6 





5.5 





4.6 


5.1 


5.7 


4.7 


4.7 


4.8 


5.8 


4.7 


4.7 


4.7 


5.8 


4.6 


4.7 


5.6 


5.8 


4.7 








5.0 


4.6 


4.7 





4.9 


4.7 


4.7 





4.9 


4.7 


4.7 





4.8 


4.7 


4.7 





4.9 


4.7 


4.7 





4.9 


4.7 








4.9 


4.6 








4.9 


4.7 


4.6 





4.9 


4.7 


4.9 





4.9 


4.7 


4.8 





4.9 





4.6 





4.9 


5.3 


4.6 








4.6 


4.7 








4.6 


4.7 








4.7 


4.7 





4.9 


4.7 


4.6 





4.9 


4.7 


4.7 





4.9 





4.7 





4.9 


4.7 


4.6 





4.7 


4.7 


4.6 





4.7 


4.7 


4.9 





4.7 


4.7 


4.5 





4.7 


4.6 






SACRAMENTO RIVER BASIN 
1 1376150 NORTH FORK BATTLE CREEK BELOW DIVERSION TO EAGLE CANYON CANAL, NEAR MANTON, CA 



113 



LOCATION.--Ut 40°25'26", long 121°55'09", inNW 1/4 SE l/4sec.25, T.30N., R.l W., Tehama County, Hydrologic Unit 18020118, on left 
bank at diversion dam to Eagle Canyon Canal and 2.8 mi southwest of Manton. 

DRAINAGE AREA.-- 186 mi^. 

PERIOD OF RECORD.-October 1987 to current year (operated as a low-flow station only). Unpublished records for water years 1978-87 available 
in files of the U.S. Geological Survey. Fragmentary records for water year 1977 available in files of Pacific Gas & Electric Co. 

GAGE.-Water-stage recorder and metal Alaskan fishladder. Elevation of gage is 1,400 ft above sea level, from topographic map. 

REMARKS. -This station records fishwater release only. Prior to water year 1996 flow computed to 7.2 ft-'/s. The minimum release requirement is 
3.0 ft-'/s at all times; flow is computed to 50 ft^/s. See schematic diagram of Battle Creek basin. 

COOPERATION. -Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



NOV 



DEC 



JAN 



FEB 



MAR 



APR 



MAY 



JUN 



JUL 



AUG 



SEP 



1 


e33 


e27 


e35 


2 


e34 


e27 


e32 


3 


e35 


g27 


e31 


4 


e35 


e27 





5 


e34 


e27 





6 


e33 


e27 





7 


e32 


e28 





8 


e32 


e2 9 





9 


e32 


e29 





10 


g33 


e29 





11 


e33 


e2 9 





12 


e32 


e29 





13 


e33 


e30 





14 


e33 


e30 





15 


e34 


e30 





16 


e3 4 


e30 





17 


e3 4 


e33 





18 


e36 





e4 6 


19 


e36 


e45 


e43 


20 


e3 5 


e48 


e30 


21 


e3 5 


e27 


e44 


22 


e35 








23 


e35 


641 


e42 


24 


e3 5 


e27 


e35 


25 


e35 


e30 


e30 


26 


e34 


e31 


e41 


27 


e34 


e31 





28 


e34 


e30 





29 


e34 


e3 





30 


e2 9 


e30 





31 


e27 








TOTAL 


1040 








MEAN 


33.5 








MAX 


36 








MIN 


27 








AC -FT 


2060 








e Est 


imaCGd. 







e49 
e50 



e48 



e46 
e45 



— 





631 


632 


635 


— 





e31 


e32 


634 


— 





e30 


632 


634 


— 





631 


632 


634 


— 





631 


632 


634 








630 


e32 


e34 


— 





e3 


e32 


634 


— 





631 


631 


634 


— 





630 


631 


634 


— 





629 


630 


633 








e29 


e30 


632 


— 





629 


632 


e33 


— 





629 


631 


633 


— 





62 9 


631 


635 


— 


e50 


629 


631 


636 





e50 


e28 


631 


633 


— 


e48 


e29 


e31 


632 


— 


649 


628 


631 


634 


— 


645 


628 


632 


633 


— 


639 


628 


635 


632 





e33 


635 


633 


632 


— 


e30 


e39 


e32 


632 


— 


631 


629 


631 


632 


— 


e30 


631 


e31 


632 


— 


628 


633 


631 


632 





62 9 


633 


g31 


632 


e49 


628 


633 


e31 


633 


e45 


e28 


634 


633 


632 


e50 


628 


633 


635 


633 





636 


633 


635 


632 








633 


635 











956 


989 


995 








30.8 


31.9 


33.2 








39 


35 


36 








28 


30 


32 








1900 


1960 


1970 



1 14 SACRAMENTO RIVER BASIN 

1 1376160 NORTH FORK BATTLE CREEK BELOW DIVERSION TO WILDCAT CANAL, NEAR MANTON. CA 

LOCATION.--Ut 40°25'14", long ni'ST'Se", in SB 1/4 SW 1/4 sec.27. T.30N.. R.l W.. Tehama County. Hydrologic Unit 18020118, on left 
bank at diversion dam to Wildcat Canal and 4.9 mi west of Manton. 

DRAINAGE AREA.--1 89 mi^. 

PERIOD OF RECORD. -October 1987 to current year (operated as alow-flow station only). Unpublished records for water years 1978-87 available 
in files of the U.S. Geological Survey. Fragmentary records for water year 1977 available in files of Pacific Gas & Electric Co. 

GAGE. "Water-stage recorder and metal Alaskan fishladder. Elevation of gage is 1,080 fi above sea level, from topographic map. 

REMARKS— This station records fishwater release only. The minimum release requirement is 3.0 ft'/s at all times; flow is computed to 60 ft^/s. 
See schematic diagram of Battle Creek basin. 

COOPERATION— Records were colleaed by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in collection 
with a Federal Energy Regulatory Commission project. 

DISCHARGE. CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



DAY 



OCT 



NOV 



DEC 



JAN 



FEB 



MAR 



APR 



MAY 



JUN 



jtn. 



AUG 



SEP 



1 


36 


30 


38 


2 


37 


30 


35 


3 


38 


30 


34 


i 


38 


30 





5 


37 


30 





6 


36 


30 





7 


35 


31 





8 


35 


32 





9 


35 


32 





10 


36 


32 





11 


36 


32 





12 


35 


32 





13 


36 


33 





14 


36 


33 





15 


37 


33 





16 


37 


33 





17 


37 


36 


56 


18 


39 


54 


49 


19 


39 


48 


46 


20 


38 


50 


33 


21 


38 


30 


47 


22 


38 





57 


23 


38 


44 


45 


24 


38 


30 


38 


25 


38 


33 


33 


26 


37 


34 


44 


27 


37 


34 





28 


37 


33 





29 


37 


33 





30 


32 


33 





31 


30 








TOTAL 


1133 








MEAN 


36.5 








MAX 


39 








MIN 


30 









56 
52 
53 
54 

51 

49 
48 



-- 





34 


35 


38 


-- 





34 


35 


37 


-- 





33 


35 


37 


-- 





34 


35 


37 


-- 





34 


35 


37 


__ 





33 


35 


37 


— 





33 


35 


37 


— 





34 


34 


37 


— 





33 


34 


37 


-- 





32 


33 


36 


__ 





32 


33 


35 


-- 





32 


35 


36 


-- 


60 


32 


34 


36 


-- 


54 


32 


34 


38 


-- 


53 


32 


34 


39 


__ 


53 


31 


34 


36 


-- 


51 


32 


34 


35 


— 


52 


31 


34 


37 


— 


48 


31 


35 


36 


-- 


42 


31 


38 


35 


__ 


36 


38 


36 


35 


-- 


33 


42 


35 


35 


-- 


34 


32 


34 


35 


-- 


33 


34 


34 


35 


-- 


31 


36 


34 


35 


__ 


32 


36 


34 


35 


52 


31 


36 


34 


36 


48 


31 


37 


36 


35 


53 


31 


36 


38 


36 


55 


39 


36 


38 


35 


— 





36 


38 






AC -FT 



2250 



1049 1082 1085 

33.8 34.9 36.3 

42 38 39 

31 33 35 

2080 2150 2150 



SACRAMENTO RIVER BASIN 115 

1 1376420 SOUTH FORK BATTLE CREEK BELOW DIVERSION TO SOUTH BATTLE CREEK CANAL, NEAR MANTON, CA 

LOCATION.--Lat 40°22'08", long 121''47'48". in SW 1/4 NW 1/4 sec.18, T.29 N., R.2 E., Tehama County, Hydrologic Unit 18020118, on right 
bank at diversion dam to South Battle Creek Canal and 5.9 mi southeast of Manton. 

DRAINAGE AREA.--66.7 mil 

PERIOD OF RECORD.-October 1987 to current year (operated as a low-flow station only). Unpublished records for water years 1978-87 available 
in files of the U.S. Geological Survey. Fragmentary records for water years 1976-77 in files of Pacific Gas & Electric Co. 

GAGE— Water-stage recorder and metal Alaskan fishladder. Elevation of gage is 2,040 ft above sea level, from topographic map. 

REMARKS. -This station records fishwater release only. The minimum release requirement is 5.0 ft'/s at all times; flow is computed to 8.9 fr'/s. 
See schematic diagram of Battle Creek basin. 

COOPERATION— Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN V/\LUES 



OCT 



NOV 



DEC 



JAN 



FEB 



MAR 



APR 



JUN 



JUL 



AUG 



SEP 



1 


6.9 


6.9 





2 


6.9 


7.0 


6.6 


3 


7.0 


6.9 


6.6 


4 


6.9 


6.9 





5 


6.9 


6.7 





6 


6.9 


6.5 





7 


7.0 


6.6 





8 


7.1 


6.6 





9 


7.0 


6.6 





10 


7.0 


6.6 





11 


7.0 


6.5 





12 


7.0 


6.6 





13 


7.0 


6.6 





14 


7.0 


6.5 





15 


6.9 


6.5 





16 


6.9 


6.5 





17 


7.0 


6.6 





18 


7.0 








19 


6.9 








20 


6.9 








21 


7.0 








22 


7.0 








23 


7.0 








24 


7.0 


6.6 





25 


6.9 


6.6 





26 


6.9 


6.6 





27 


6.9 


6.7 





28 


7.0 


6.7 





29 


7.0 


6.6 





30 


6.9 


6.7 





31 


6.9 








TOTAL 


215.7 








MEAN 


6.96 








MAX 


7.1 








MIN 


6.9 








AC-FT 


428 









6.8 



6.9 



8.1 
7.7 
7.0 
7.3 
7.4 

7.4 
7.4 
7.4 
7.4 
7.4 

7.5 
7.4 
7.4 
7.1 
6.9 



6.7 
6.7 
6.7 
6.7 
6.7 

6.7 
6.7 
6.8 
6.7 
6.7 

5.8 
6.8 
5.9 
8.6 



8.3 

6.8 
6.4 
6.5 



7.3 
6.6 



6.6 
6.6 



6.7 
6.7 
7.8 



8.7 
6.6 
6.8 
7.3 
7.4 

6.6 

6.3 
6.8 
7.0 

7.1 
7.0 
6.8 
6.7 
6.8 

6.7 
6.7 
6.7 
6.8 
6.8 

6.7 
6.7 
6.7 
6.7 

6.7 



6.7 
6.7 
6.3 
6.5 
6.5 

6.6 
6.5 

6.5 
6.6 

6.5 
6.6 
6.5 
6.5 
6.6 

6.6 
6.5 
6.6 
6.6 
6.6 

6.6 
6.5 
6.5 
6.5 
6.6 



6.5 
6.6 
6.6 
6.5 
6.6 

6.6 
6.6 
6.8 
6.7 
6.9 

6.9 
6.9 
6.5 
6.6 
6.6 

6.5 
6.5 
6.5 
6.5 
6.5 

6.5 
6.5 
6.5 
6.5 
6.5 



203.9 

6.58 

6.9 

6.5 

404 



6.5 
6.5 
6.5 
6.5 
6.6 

6.5 
6.5 
6.5 
6.5 
6.5 

6.5 
6.5 
6.5 
6.5 
6.5 

6.5 
6.5 

6.5 
6.5 

6.5 
6.6 
6.5 
6.5 
6.5 

6.5 
6.5 
6.5 
6.5 
6.5 



1 16 SACRAMENTO RIVER BASIN 

1 1 376440 SOUTH FORK BATTLE CREEK BELOW DIVERSION TO INSKIP CANAL. NEAR MANTON, CA 

LOCATION.-Lat 40°23'43 ", long 121''52'57". in NW 1/4 SE 1/4 sec.5, T.29 N., R.l E., Tehama County, Hydrologic Unit 180201 1 8, on left bank 
at diversion dam to Inskip Canal and 2.8 mi south of Manton. 

DRAINAGE AREA.-88 3 mil 

PERIOD OF RECORD. --October 1987 to current year (operated as a low-flow station only). Unpublished records for water years 1978-87 available 
in files of the U.S. Geological Survey. Fragmentary records for water year 1977 available in files of Pacific Gas & Electric Co. 

GAGE— Water-stage recorder and metal Alaskan fishladder. Elevation of gage is 1 ,440 ft above sea level, from topographic map. 

REMARKS— This station records fishwater release only. The minimum release requirement is 5,0 ftVs at all times; flow is computed to 12 ft^/s. 
See schematic diagram of Battle Creek basin 

COOPERATION.-Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 

DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 



1 


11 





2 


11 


11 


3 


11 


11 


4 





11 


5 





10 


6 





10 


7 


11 


10 


8 


11 


10 


9 


11 


10 


10 


11 


9.8 


11 


11 


9.7 


12 


11 


10 


13 


11 


10 


14 


11 


10 


15 


11 


10 


16 


9.5 


10 


17 


9.2 





18 








19 


10 





20 


9.4 





21 


9.4 





22 


9.5 





23 


10 





24 








25 





— 


26 








27 








28 


11 





29 








30 








31 





— 


TOTAL 








MEAN 








MAX 








MIN 








AC -FT 









7.9 
8.6 



— 





8.3 


9.4 


— 


12 


8.4 


9.5 


— 


11 


8.3 


9.5 


— 


11 


8.4 


9.5 


— 


11 


8.6 


9.5 





10 


8.8 


9.5 


— 


10 


8.7 


9.5 


— 


10 


8.8 


9.5 


— 


10 


8.7 


9.5 


— 


10 


8.7 


9.6 





9.7 


8.7 


9.6 





9.8 


8.1 


9.6 





9.4 


8.9 


9.6 





9.3 


8.8 


12 


— 


9.1 


8.8 


11 





9.3 


8.8 


9.6 





8.5 


8.9 


9.9 





8.7 


9.2 








8.7 


9.4 


11 





8.5 


12 


9.9 





6.9 


11 


10 





6.2 


9.1 


10 





6.8 


9.2 


10 





8.4 


9.4 


10 





8.4 


9.3 


10 





8.0 


9.4 


10 


10 


8.3 


9.3 


10 


10 


8.5 


9.2 


10 


9.8 


8.3 


9.3 


10 





8.2 


9.2 


11 





8.1 


9.3 


--- 








281.0 








::: 


9.06 
12 








— 


8.1 
557 






SACRAMENTO RIVER BASIN 
1 1376460 SOUTH FORK BATTLE CREEK BELOW DIVERSION TO COLEMAN DITCH, NEAR MANTON, CA 



117 



LOCATION.--Ut 40°24'10", long 12r58'02". in NW 1/4 NW 1/4 sec.3, T.29 N.. R.l W., Tehama County, Hydrologic Unit 18020118, on right 
bank 7.5 mi southwest of Shingletown and 5.7 mi southwest of Manton. 

DRAINAGE AREA.--102 mi^. 

PERIOD OF RECORD.-October 1987 to current year (operated as a low-flow station only). Unpublished records for water years 1978-86 available 
in files of the U.S. Geological Survey. Fragmentary records for water year 1977 available in files of Pacific Gas & Electric Co. 

GAGE. -Water-stage recorder and metal Alaskan fishladder. Elevation of gage is 980 ft above sea level, from topographic map. 

REMARKS— This station records fishwater release only. Prior to water year 1996 flow computed to 10 ft''/s. The minimum release requirement is 
5.0 ft'/s at all times; flow is computed to 45 ft'/s. See schematic diagram of Battle Creek basin. 

COOPERATION. -Records were collected by the Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in 
connection with a Federal Energy Regulatory Commission project. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



NOV 



DEC 



JAN 



FEB 



1 


e32 


e30 





2 


e32 


e30 


e33 


3 


e32 


e30 


e34 


4 


e32 


e30 


e33 


5 


e32 


e30 





e 


e32 


e29 





7 


e33 


e30 





8 


e33 


e29 





9 


e33 


e30 





10 


e33 


e35 





11 


e32 


e29 





12 


e32 


e29 





13 


e32 


e30 





14 


e32 


e30 





15 


e32 


e30 





16 


e32 


e30 





17 


e33 


e30 





18 


e33 


e35 


e37 


19 


e33 


e31 


e37 


20 


e31 


e37 


e37 


21 


e31 


e22 


e37 


22 


e32 


g33 


e32 


23 


e31 





e37 


24 


e31 


e33 


e34 


25 


e31 


e33 


e34 


26 


e30 


g33 





27 


e30 


e33 





28 


e30 


e34 





29 


e30 


e34 





30 


e30 


e33 





31 


e30 








TOTAL 


982 








MEAN 


31.7 








MAX 


33 








MIN 


30 








AC -FT 


1950 








e Est 


imated. 







MAR 


APR 


MAY 


JUN 


JUL 


AUG 


SEP 


e43 








e3 


630 


e30 














e30 


e30 


e30 














e31 


628 


631 





e37 


e44 





e42 


630 


630 





e41 


e40 





e43 


630 


630 





e43 


e37 





e31 


630 


e31 





e42 


633 





g31 


e30 


630 








e31 





e31 


629 


630 








e30 





e31 


629 


630 





e45 


e28 





e31 


e28 


630 








e29 





e31 


629 


630 





g31 


e30 


e42 


e31 


628 


63 





e31 


e33 


e3 8 


e32 


e29 


632 





e31 


g32 


e24 


631 


629 


633 





e30 


e32 


e33 


631 


628 


633 








e32 


e33 


631 


628 


63 4 








e32 


e33 


631 


628 


e34 








e33 


e3 6 


631 


628 


63 5 











e36 


631 


629 


e3 5 











e3 6 


631 


629 


e35 











e37 


631 


628 


e34 











e31 


630 


62 8 


635 











e30 


e30 


e28 


634 











e41 


630 


e29 


e33 











e3 


631 


e2 8 


e34 











e30 


633 


629 


e33 











e30 


631 


630 


e35 


e34 








e30 


e30 


630 





635 








e30 


633 


630 





645 








e30 


e2 9 


630 





63 8 








e30 





630 

















950 


899 

















31.7 


29.0 

















43 


30 

















29 


28 

















1880 


1780 









118 



SACRAMENTO RIVER BASIN 
1 1 376550 BATTLE CREEK BELOW COLEMAN RSH HATCHERY, NEAR COTTONWOOD, CA 



LOCATION.--Ut 40°23'54", long 122°08'43", in SW 1/4 NE 1/4 seel, T.29 N.. R.3 W., Shasta County, Hydrologic Unit 18020101. U.S. Fish 
and Wildlife Service land, on right bank 3.7 mi downstream from Spring Branch, 5.7 mi upstream from mouth, and 7.0 mi east of Cottonwood. 

DRAINAGE AREA.-357 mi^ 

PERIOD OF RECORD.-October 1961 to September 1996. October 1996 to September 1997 (operated as a low flow station only). October 1940 
to September 1961 at site 0.6 mi upstream published as "near Cottonwood"; low-flow records not equivalent owing to Coleman Fish Hatchery 
diversion, maximum flows considered equivalent. 

CHEMICAL DATA: Water years 1962-66. 

WATER TEMPERATURE: Water years 1966-79. 

SEDIMENT DATA: Water years 1962-70. 

GAGE. -Water-stage recorder. Elevation of gage is 415 ft above sea level, from topographic map. 

REMARKS— Records good. Some regulation at low flows by five small powerplants, several small reservoirs, and Coleman Fish Hatchery. 
Coleman Fish Hatchery diverts from 50 to 90 ft^/s and pumps ground water for temperature control, which is returned above the station. At 
times, 10 ft^/s diverted upstream from station for irrigation. Flow is computed to 540 ft^/s. See schematic diagrams of Battle Creek and upper 
Sacramento River basins. 

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 24,300 ft^/s, Jan. 24, 1970, gage height, 14.75 ft, from rating curve extended 
above 4,200 ft^/s on basis of slope-area measurement of peak flow; minimum, 52 fr'/s, Aug. 8, 1962. 

EXTREMES OUTSIDE PERIOD OF RECORD.-Maximum stage known, 15.8 ft, Dec. II, 1937, from floodmarks, site and datum then in use, 
discharge, 35,000 ft^/s by slope-area measurement. 

EXTREMES FOR CURRENT YEAR.-Maximum stage, 12.74 ft., Jan. 1. 

DISCH/VRGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 

DAY OCT NOV DEC JAN FEB MAR APR MAY Jlttl JUL AUG SEP 



1 


271 


322 


438 


2 


283 


317 


398 


3 


284 


313 


353 


4 


296 


320 


356 


5 


298 


327 





6 


286 


323 





7 


283 


317 





8 


290 


317 





9 


276 


305 





10 


277 


305 





11 


284 


301 





12 


266 


301 





13 


261 


299 





14 


265 


305 





15 


265 


305 





16 


274 


299 





17 


283 


347 


510 


18 


287 


447 


478 


19 


301 


503 


465 


20 


293 





441 


21 


295 


426 


511 


22 


297 








23 


310 








24 


306 


425 


478 


25 


317 


390 


454 


26 


315 


365 





27 


310 


350 





28 


312 


328 





29 


350 


323 





30 


363 


316 





31 


336 








TOTAL 


9134 








MEAN 


295 








MAX 


363 








MIN 


261 








AC -FT 


18120 









515 


501 


526 


415 


355 


251 


241 





482 


504 


409 


334 


251 


240 


540 


474 


490 


410 


327 


253 


243 


540 


471 


487 





320 


253 


241 





462 


479 


519 


316 


250 


235 





452 


462 


467 


313 


251 


235 


528 


458 


461 


439 


311 


248 


235 


528 


453 


452 


435 


295 


242 


238 


520 


450 


459 


444 


290 


246 


243 


519 


447 


461 


424 


288 


246 


243 


523 


438 


463 


409 


287 


250 


247 


509 


433 


467 


426 


282 


244 


248 


495 


432 


462 


422 


279 


243 


248 


494 


438 


451 


405 


275 


243 


269 


496 


434 


441 


397 


273 


243 


298 





435 


441 


400 


269 


241 


263 





437 


429 


392 


268 


240 


255 





452 


427 


387 


269 


240 


283 








427 


385 


267 


238 


277 


— - 


— 


429 


373 


269 


282 


262 








424 


370 


262 


270 


260 








419 


365 


273 


255 


259 








447 


359 


264 


249 


256 








498 


353 


264 


250 


253 


--- 


— 


433 


344 


260 


235 


248 








415 


340 


258 


245 


250 








407 


336 


255 


248 


258 








399 


329 


258 


249 


256 


536 





404 


328 


255 


239 


261 


540 


520 


400 


349 


257 


241 


261 


536 





406 





255 


243 











13870 





8748 


7679 


7606 








447 





282 


248 


254 








526 





355 


282 


298 








399 





255 


235 


235 








27510 





17350 


15230 


15090 



SACRAMENTO RIVER BASIN 
11377100 SACRAMENTO RIVER ABOVE BEND BRIDGE, NEAR RED BLUFF, CA 



119 



LOCATION.--Lat 40° 17' 19", long 122''ir08", in NW 1/4 NE 1/4 sec. 15, T.28 N., R.3 W., Tehama County, Hydrologic Unit 18020103, on left 
bank 2.7 mi upstream from Bend Bridge, and 8.1 mi northeast of Red Bluff. 



DRAINAGE AKEA.-i.900 mi^ 



excluding Goose Lake basin. 

WATER-DISCHARGE RECORDS 



PERIOD OF RECORD.--1 879-88 annual observed maximums only, published in WSP 1315-A. January 1892 to current year. Monthly discharges 
only for some periods and yearly estimates for some incomplete years, pubUshed in WSP 1315-A. Published as "at Red Bluff 1894-96, as "at 
JeUys Ferry" 1895-1902, and as "near Red Bluff 1903-68 (station 1 1378000). 



1904, 1907, 1909, 1914-15, 1927-28. WSP 1315-A: 1916(M), 1918(M), 1941(M). WSP 1931: Drainage area. 



REVISED RECORDS.-WSP 861: 
WDRCA-69-2: 1965. 

GAGE.-Water-stage recorder and crest-stage gage. Datum of gage is 285.77 ft above sea level. See WSP 2131 for history of changes prior to 
September 1968. 

REMARKS— Records good. Flow completely regulated by Shasta Lake (station 1 13700(X)), 52 mi upstream, since Dec. 30, 1943. Diversions, in 
addition to those on tributaries, for irrigation of about 22,000 acres between stations at Keswick and above Bend Bridge. Transbasin diversion 
from Trinity River to Whiskeytown Lake (station 11371700) via Judge Francis CarrPowerplant (station 1 1 525430) started in April 1963. See 
schematic diagrams of upper Sacramento River and Battle Creek basins. 

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 291,000 ft^/s, Feb. 28, 1940, gage height, 38.9 ft, site and datum then in use, 
from rating curve extended above 1 70,000 ft^/s on basis of velocity-area studies; minimum (water years 1 892- 1 997), 2,000 ft'/s. Mar. 29, 1 944. 
Since regulation by Shasta Lake in 1943, maximum discharge, 170,(X)0 ft^/s, Dec. 22, 1964, gage height, 28.15 ft, site and datum then in use; 
maximum gage height, 36.60 ft, Jan. 24, 1970. 



OCT 



DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 

NOV DEC JAN FEB MAR APR MAY JUN JUL 



1 


8300 


6500 


6600 


103000 


42100 


8170 


7420 


9640 


10700 


15700 


14800 


9880 


2 


8170 


6470 


6640 


97400 


35600 


8410 


7540 


9450 


11000 


15700 


14700 


10200 


3 


8210 


6460 


6600 


91000 


29500 


8360 


7430 


9150 


11100 


15500 


14800 


10400 


4 


8040 


6450 


6610 


93300 


27700 


8220 


7360 


9090 


12000 


15300 


14900 


10700 


5 


7840 


6420 


12300 


83700 


31100 


8120 


7340 


9050 


11500 


15100 


14600 


10700 


6 


7790 


6410 


9200 


62900 


30700 


8100 


7290 


9240 


11600 


15100 


14400 


10700 


7 


7780 


6400 


8700 


57300 


30300 


7900 


7280 


9400 


11600 


14800 


14000 


10800 


8 


7760 


6310 


17000 


56500 


28300 


7720 


7220 


9610 


11900 


15000 


13900 


10100 


9 


7570 


6470 


26600 


55900 


24400 


7700 


7210 


9730 


12100 


15500 


13700 


9200 


10 


7200 


6510 


43100 


55100 


21400 


7680 


7180 


9800 


12600 


15600 


13500 


9040 


11 


6870 


6450 


43700 


55200 


18700 


7690 


7090 


10300 


13200 


15700 


13200 


8690 


12 


6570 


6410 


43900 


56700 


16000 


7680 


6970 


10700 


14400 


15700 


12700 


8390 


13 


6430 


6420 


40400 


56500 


13800 


7610 


7210 


10600 


14900 


15700 


12100 


8390 


14 


6350 


6420 


35200 


53000 


12300 


7560 


7540 


10600 


15200 


15900 


12500 


8610 


15 


6240 


6280 


30000 


55700 


11000 


7520 


7670 


10700 


15900 


15600 


11900 


8780 


16 


6150 


6280 


25900 


48900 


9910 


7900 


7620 


11000 


15900 


15800 


10900 


8660 


17 


6210 


6490 


22400 


40300 


el0300 


11500 


7760 


10900 


15900 


15600 


10400 


8330 


18 


6260 


6810 


19900 


39000 


69900 


9150 


7990 


10800 


16000 


15400 


10500 


8090 


19 


6320 


7330 


18800 


36200 


e9400 


8520 


8900 


10700 


16000 


15500 


10400 


7920 


20 


6290 


8610 


18700 


31900 


89100 


8330 


9050 


10700 


15500 


15400 


10700 


7700 


21 


6280 


7250 


19000 


31500 


8790 


8300 


9130 


10600 


15200 


15600 


10500 


7620 


22 


6280 


7760 


20400 


57400 


8730 


8260 


8990 


10600 


15300 


15700 


9770 


7600 


23 


6300 


7800 


19300 


45600 


8720 


8130 


10100 


10900 


15300 


16000 


9500 


7510 


24 


6330 


7090 


16100 


42800 


8720 


8050 


8770 


11300 


15300 


15400 


9540 


7470 


25 


6370 


6900 


14000 


64400 


8400 


8000 


8560 


11200 


15400 


15500 


9540 


7460 


26 


6410 


6790 


18000 


59600 


8330 


7960 


9080 


11200 


15200 


15200 


9320 


7470 


27 


6460 


6700 


25300 


43400 


8280 


7830 


9610 


11200 


15600 


14600 


9120 


7390 


28 


6470 


6630 


32900 


42300 


8220 


7760 


9620 


11000 


15600 


14600 


8910 


7330 


29 


6610 


6560 


46600 


50800 





7680 


10200 


10500 


15600 


14700 


8810 


7260 


30 


6770 


6540 


72000 


47300 





7660 


9910 


10200 


15700 


14900 


9160 


7070 


31 


6600 


--- 


95300 


45800 





7720 





10500 





14800 


9250 





TOTAL 


213230 


201920 


821150 


1760400 


489700 


251190 


245040 


320360 


423200 


476600 


362020 


259460 


MEAN 


6878 


6731 


26490 


56790 


17490 


8103 


8168 


10330 


14110 


15370 


11680 


8649 


MAX 


8300 


8610 


95300 


103000 


42100 


11500 


10200 


11300 


16000 


16000 


14900 


10800 


MIN 


6150 


6280 


6600 


31500 


8220 


7520 


6970 


9050 


10700 


14600 


8810 


7070 


AC -FT 


422900 


400500 


1629000 


3492000 


971300 


498200 


486000 


635400 


839400 


945300 


718100 


514600 


e Estimated. 

























120 



SACRAMENTO RIVER BASIN 
1 1377100 SACRAMENTO RIVER ABOVE BEND BRIDGE, NEAR RED BLUFF, CA— Continued 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1892 - 1943, BY WATER YEAR (WY) 

OCT NOV DEC JAN FEB MAR APR MAY JUN 



JUL 



MEAN 


4853 


7538 


11940 


18960 


24760 


22210 


18280 


12310 


7635 


5127 


4381 


4404 


MAX 


10910 


21420 


42780 


72340 


69240 


73280 


38810 


27910 


17640 


10170 


9050 


8481 


(WY) 


1905 


1904 


1893 


1909 


1902 


1904 


1904 


1896 


1906 


1893 


1893 


1893 


MIN 


2847 


3300 


3618 


4142 


4778 


4434 


4014 


3253 


2969 


2622 


2505 


2551 


(WY) 


1933 


1937 


1937 


1937 


1920 


1924 


1924 


1924 


1924 


1931 


1931 


1934 



SUMMARY STATISTICS 

ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC -FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



WATER YEARS 1892 - 1943 



11800 








22180 






1904 


4096 






1924 


261000 


Feb 


28 


1940 


2400 


Aug 


13 


1931 


2470 


Aug 


7 


1931 


291000 


Feb 


28 


1940 


38.9 


Feb 


28 


1940 


I343UUU 

24000 








6500 








3520 









STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1946 - 1962, BY WATER YEAR (WY) 

OCT NOV DEC JAN FEB MAR APR MAY JUN 



MEAN 


6501 


6932 


11440 


16840 


19340 


11950 


10210 


10260 


9469 


MAX 


10490 


11180 


29530 


52620 


76870 


24840 


32420 


17830 


12930 


(WY) 


1958 


1958 


1956 


1956 


1958 


1958 


1958 


1948 


1948 


MIN 


5468 


4681 


4336 


5104 


4579 


4727 


5335 


6788 


7253 


(WY) 


1960 


1960 


1960 


1957 


1948 


1955 


1950 


1947 


1947 



SUMMARY STATISTICS 

ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC -FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



WATER YEARS 1946 - 1962 



10840 








20330 






1958 


5690 






1947 


125000 


Feb 


19 


1958 


3640 


Jan 


31 


1949 


3830 


Feb 


27 


1948 


139000 


Feb 


19 


1958 


24.98 


Feb 


19 


1958 


7852000 








16900 








8430 








5190 









JVh 



AUG 



SEP 



10030 10030 7510 

11630 11800 10230 

1951 1958 1958 

7476 7080 5289 

1947 1947 1947 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1964 - 1997, BY WATER YEAR (WY) 



10600 



NOV 



9182 
29690 



14250 
43350 



19000 
61060 



58190 



17390 
75830 



12190 
35110 



MAY 



12110 



12030 
17460 



12760 
15690 



11650 
14930 



SUMMARY STATISTICS 

ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC-FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



8473 
12040 



(WY) 


1984 


1974 


1984 


1970 


1983 


1983 


1974 


1995 


1983 


1995 


1995 


1995 


MIN 


3935 


4068 


4296 


4573 


4700 


5476 


4804 


7322 


7431 


7811 


7998 


5323 


(WY) 


1978 


1993 


1977 


1992 


1990 


1994 


1991 


1992 


1992 


1992 


1992 


1977 



WATER YEARS 1964 - 1997 



5807170 






5824270 














15870 






15960 






12880 

25450 

6494 






1983 
1991 


95300 


Dec 


31 


103000 


Jan 


1 


127000 


Jan 


27 


1970 


6150 


Oct 


16 


6150 


Oct 


16 


3200 


Oct 


11 


1977 


6250 


Oct 


15 


6250 


Oct 


15 


3210 


Oct 


10 


1977 








121000 


Jan 


1 


170000 


Dec 


22 


1964 








30.62 


Jan 


1 


36.60 


Jan 


24 


1970 


1520000 






11550000 






9333000 








31400 






37300 






19800 








13500 






10200 






9970 








6470 






6590 






5440 









SACRAMENTO RIVER BASIN 
11377100 SACRAMENTO RIVER ABOVE BEND BRIDGE, NEAR RED BLUFF, CA— Continued 



121 



WATER-QUALITY RECORDS 

PERIOD OF RECORD.-- Water years 1955-81, 1996 to current year. 

CHEMICAL DATA: Water years 1955-81, February 1996 to current year. Published as "Sacramento River at Bend" from May 1955 to 

September 1973; as Sacramento River at Bend Bridge (station 1 1377200) from October 1973 to September 1976. 
WATER TEMPERATURE: Water years 1955 to June 1980 (water years 1955-63 reported as station 1 1377200; water years 1964-70 as station 

11378000). 
SEDIMENT DATA: Water year 1958-70 (water years 1958-67 reported as station 1 1378500; water years 1968-70 as station 1 1377200), 1977 

to May 1983, February 1996 to current year 

PERIOD OF DAILY RECORD- 
CHEMICAL DATA: May 1955 to September 1963. 
SPECIFIC CONDUCTANCE: May 1955 to September 1963. 
WATER TEMPERATURES: May 1955 to June 1980. 
SUSPENDED SEDIMENT: October 1957 to September 1970, January 1977 to May 1980 (storm season only for water years 1977, 1979-80). 

REMARKS. -National Water-Quality Assessment (NAWQA) Program site established February 1996. Samples collected from Bend Bridge, 
2.7 mi downstream from gaging station. 

WATER-QUALITY DATA, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 



OCT 

23., 
NOV 

22., 
DEC 

12., 
JAN 

03., 
FEB 

20. 
MAR 

20., 
APR 

22. 
MAY 

30., 
JUN 

25., 
JUL 

23., 
AUG 

21., 
SEP 

17.. 





DIS- 




PH 




BARO- 




OXYGEN, 








CHARGE, 


SPE- 


WATER 




METRIC 




DIS- 




MAGNE- 




INST. 


CIFIC 


WHOLE 




PRES- 




SOLVED 


CALCIUM 


SIUM, 




CUBIC 


CON- 


FIELD 


TEMPER- 


SURE 


OXYGEN, 


(PER- 


DIS- 


DIS- 




FEET 


DUCT- 


(STAND- 


ATURE 


(MM 


DIS- 


CENT 


SOLVED 


SOLVED 


TIME 


PER 


ANCE 


ARD 


WATER 


OF 


SOLVED 


SATUR- 


(MG/L 


(MG/L 




SECOND 


(US/CM) 


UNITS) 


(DEG C) 


KG) 


(MG/L) 


ATION) 


AS CA) 


AS MG) 




(00061) 


(00095) 


(00400) 


(00010) 


(00025) 


(00300) 


(00301) 


(00915) 


(00925) 


1020 


6300 


114 


7.7 


12.5 


756 


10.2 


96 


11 


5.1 


1330 


7780 


129 


7.8 


13.0 


750 


9.7 


94 


11 


5.3 


1700 


42200 


111 


7.8 


12.0 


756 


11.0 


103 


10 


5.3 


1230 


86400 


104 


7.9 


10.5 


760 


11.4 


103 


9.4 


3.9 


0930 


10600 


120 


7.9 


9.0 


763 


11.1 


95 


11 


4.8 


1000 


8300 


123 


7.9 


11.5 


758 


10.8 


100 


11 


5.0 


0950 


9140 


112 


7.9 


12.0 


756 


10.4 


97 


9.6 


4.8 


1200 


10100 


111 


7.7 


12.5 


753 


10.4 


98 


9.0 


4.9 


1000 


15400 


110 


7.5 


12.0 


752 


10.6 


99 


9.0 


4.7 


1000 


16000 


108 


7.6 


11.5 


757 


10.7 


99 


9.3 


4.7 


1000 


10700 


114 


7.7 


12.5 


757 


10.1 


96 


10 


4.7 


1000 


8390 


124 


7.6 


12.5 


749 


11.2 


107 


11 


5.1 



122 



SACRAMENTO RIVER BASIN 

11377100 SACRAMENTO RIVER ABOVE BEND BRIDGE, NEAR RED BLUFF, CA— Continued 

WATER-QUALITY DATA, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 



OCT 

23. , 
NOV 

22. , 
DEC 

12. , 
JAN 

03. . 
FEB 

20. . 
MAR 

20. . 
APR 

22. . 
MAY 

30. . 
JUN 

25. . 
JUL 

23. . 
AUG 

21. . 
SEP 

17. . 



OCT 

23. . 
NOV 

22. . 
DEC 

12. . 
JAN 

03. . 
FEB 

20. . 
MAR 

20. . 
APR 

22. . 
MAY 

30. . 
JUN 

25. . 
JUL 

23. . 
AUG 

21. . 
SEP 

17. . 









ALKA- 










SOLIDS, 


SOLIDS, 






POTAS- 


LINITY 




CHLO- 


FLUO- 


SILICA, 


RESIDUE 


Sim OF 


SODIUM, 




SIUM, 


WAT.DIS 


SULFATE 


RIDE, 


RIDE, 


DIS- 


AT 180 


CONSTI- 


DIS- 




DIS- 


GRAN T. 


DIS- 


DIS- 


DIS- 


SOLVED 


DEG. C 


TUENTS, 


SOLVED 




SOLVED 


FIELD 


SOLVED 


SOLVED 


SOLVED 


(MG/L 


DIS- 


DIS- 


(MG/L 


SODIUM 


(MG/L 


CAC03 


(MG/L 


(MG/L 


(HG/L 


AS 


SOLVED 


SOLVED 


AS NA) 


PERCENT 


AS K) 


(MG/L) 


AS S04) 


AS CD 


AS F) 


SI02) 


(MG/L) 


(MG/L) 



(00930) (00932) (00935) (29802) (00945) (00940) (00950) (00955) (70300) (70301) 



6.1 
7.2 
6.1 
4.9 
5.7 
6.4 
5.1 
5.0 
5.1 
5.3 
6.0 
7.2 



21 
24 
22 
21 
20 
22 
20 
20 
21 
21 
22 
24 



1.1 
1.3 
1.3 
1.1 
1.0 
1.1 

.86 
1.0 
1.1 
1.1 
1.2 
1.4 



50 
52 
50 
43 
50 
49 
43 
46 
44 
47 
49 
52 



NITRO- NITRO- NITRO- 

SOLIDS, GEN, GEN, GEN, 

DIS- NITRITE N02+N03 AMMONIA 

SOLVED DIS- DIS- DIS- 

(TONS SOLVED SOLVED SOLVED TOTAL 

PER (MG/L (MG/L (MG/L 



3.6 


2.1 


<.10 


21 


75 


84 


5.4 


4.4 


<.10 


22 


93 


91 


4.6 


2.2 


<.10 


22 


84 


84 


4.0 


1.7 


<.10 


18 


71 


72 


5.7 


2.5 


.10 


21 


86 


86 


6.4 


2.8 


<.10 


20 


87 


87 


4.2 


2.4 


<.10 


20 


89 


77 


3.2 


1.9 


<.10 


20 


77 


76 


3.1 


1.7 


<.10 


19 


82 


75 


3.1 


1.7 


<.10 


20 


81 


76 


3.2 


1.8 


<.10 


21 


86 


82 


3.9 


2.4 


<.10 


23 


86 


90 


NITRO- 


NITRO- 






PHOS- 




GEN, AM- 


GEN, AM- 




PHOS- 


PHORUS 


ALUM- 


MONIA + 


MONIA + 


PHOS- 


PHORUS 


ORTHO , 


INUM, 


ORGANIC 


ORGANIC 


PHORUS 


DIS- 


DIS- 


DIS- 


TOTAL 


DIS. 


TOTAL 


SOLVED 


SOLVED 


SOLVED 


(MG/L 


(MG/L 


(MG/L 


(MG/L 


(MG/L 


(UG/L 



AC-FT) 



AS N) 



AS N) 



AS N) 



AS N) 



AS N) 



AS P) 



AS P) AS P) 



AS AL) 



(70303) (00613) (00631) (00608) (00625) (00623) 



(00665) (00666) 



(00671) (01106) 



10 


.010 


.110 


<.015 


<.20 


<.20 


.020 


.020 


.030 


7.0 


13 


.020 


.250 


.090 


<.20 


<.20 


.030 


.030 


.030 


11 


11 


.020 


.140 


.020 


<.20 


<.20 


.050 


<.010 


.020 


24 


10 


<.010 


.100 


<.015 


.30 


<.20 


.230 


<.010 


<.010 


15 


12 


.020 


.150 


<.015 


<.20 


<.20 


.030 


<.010 


<.010 


9.0 


12 


<.010 


.100 


<.015 


<.20 


<.20 


<.010 


<.01O 


.020 


10 


12 


<.O10 


.097 


<.015 


<.20 


<.20 


.041 


.020 


.025 


7.8 


10 


<.010 


.098 


<.015 


<.20 


<.20 


.062 


.018 


.020 


6.9 


11 


<.010 


.108 


<.015 


<.20 


<.20 


.041 


.019 


.019 


7.2 


11 


<.010 


.080 


<.015 


<.20 


<.20 


.037 


<.010 


.020 


5.7 


12 


<.010 


.103 


<.015 


<.20 


<.20 


.016 


.027 


.020 


5.0 


12 


<.010 


.112 


<.015 


<.20 


<.20 


.031 


.013 


.031 


8.9 



SACRAMENTO RIVER BASIN 

11377100 SACRAMENTO RIVER ABOVE BEND BRIDGE, NEAR RED BLUFF, CA— Continued 

WATER-QUALITY DATA, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 



123 



DATE 



OCT 

23. . . 
NOV 

22.. 

DEC 

12. . 
JAN 

03. . 
FEB 

20. . 
MAR 

20. . 
APR 

22. . 
MAY 

30. . 
JUN 

25. . 
JUL 

23. . 
AUG 

21. . 
SEP 

17... 



ANTI- 
MONY, 
DIS- 
SOLVED 
(UG/L 
AS SB) 



ARSENIC BARIUM, 

DIS- DIS- 
SOLVED SOLVED 
(UG/L (UG/L 



BERYL- 




CHRO- 




LIUM, 


CADMIUM 


MIUM, 


COBALT 


DIS- 


DIS- 


DIS- 


DIS- 



SOLVED SOLVED SOLVED SOLVED 
(UG/L (UG/L (UG/L (UG/L 



AS AS) AS BA) AS BE) AS CD) AS CR) 



AS CO) 



(01095) (01000) (01005) (01010) (01025) (01030) (01035) 



<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 



1 

1 
1 
1 
1 

<1 
1 

<1 
1 
1 

<1 
1 



15 
18 
17 
15 
17 
17 
15 
15 
13 
13 
15 
16 



<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 



<1.0 
cl.O 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 



<1.0 
1.0 

<1.0 
1.0 

<1.0 

<1.0 
1.0 
1.2 

<1.0 
1.5 

<1.0 
1.0 



<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 



COPPER, IRON, LEAD, 
DIS- DIS- DIS- 
SOLVED SOLVED SOLVED 
(UG/L (UG/L (UG/L 
AS CU) AS FE) AS PB) 
(01040) (01046) (01049) 



1.0 
2.0 
3.0 
2.0 
1.0 
1.0 
1.5 

<1.0 
1.4 
1.3 
1.1 

<1.0 



11 

13 

14 

25 
9.0 

12 
7.1 
5.1 
4.5 
3.0 
7.0 
9.3 



<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 



OCT 

23. . 
NOV 

22.. 

DEC 

12. . 
JAN 

03. . 
FEB 

20. . 
MAR 

20. . 
APR 

22.. 
MAY 

30. . 
JUN 

25. . 
JUL 

23. . 
AUG 

21. . 
SEP 

17.. 



URANIUM 
ZINC, NATURAL 
DIS- DIS- 
SOLVED SOLVED 
(UG/L (UG/L 

AS MN) AS MO) AS NI) AS SE) AS AG) AS ZN) AS U) 

(01056) (01060) (01065) (01145) (01075) (01090) (22703) 



MANGA- 


MOLYB- 




SELE- 




NESE, 


DENUM, 


NICKEL, 


NIUM, 


SILVER 


DIS- 


DIS- 


DIS- 


DIS- 


DIS- 


SOLVED 


SOLVED 


SOLVED 


SOLVED 


SOLVED 


(UG/L 


(UG/L 


(UG/L 


(UG/L 


(UG/L 



2.0 


<1.0 


1.0 


3.0 


<1.0 


1.0 


3.0 


<1.0 


<1.0 


6.0 


<1.0 


1.0 


6.0 


<1.0 


1.0 


4.0 


<1.0 


<1.0 


2.2 


<1.0 


<1.0 


2.1 


<1.0 


1.3 


2.0 


<1.0 


1.5 


2.4 


<1.0 


1.4 


2.0 


<1.0 


<1.0 


3.0 


<1.0 


<1.0 



<1 
<1 
<1 
<1 
<1 
<1 
<1 
<1 
<1 
<1 
<1 
<1 



<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 



1.0 <1.0 

2.0 <1.0 

3.0 <1.0 

1.0 <1.0 

2.0 <1.0 
<1.0 

1.5 <1.0 

1.2 <1.0 

1.8 <1.0 

1.9 <1.0 
1.8 <1.0 
1.4 <1.0 



CARBON, 
ORGANIC 

DIS- 
SOLVED 
(MG/L 

AS C) 
(00681) 



1.2 

1.6 
1.5 
1.5 
1.3 
1.5 
1.6 

1.3 
3.2 

1.4 



CARBON, 
ORGANIC 

SUS- 
PENDED 

TOTAL 
(MG/L 

AS C) 
(00689) 



.30 
.30 
.40 
1.0 
.20 
.10 
.30 

.10 
.20 

<.20 



124 



SACRAMENTO RIVER BASIN 
1 1377100 SACRAMENTO RIVER ABOVE BEND BRIDGE. NEAR RED BLUFF, CA— Continued 
SUSPENDED-SEDIMENT DISCHARGE, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 



OCT 




23. 


. .N 


NOV 




22. 


. .N 


DEC 




12. 


. .N 


JAN 




03. 


. .N 


FEB 




20. 


. .N 


MAR 




20. 


. .N 


APR 




22. 


. .N 


MAY 




30. 


. .N 


JUN 




25. 


. .N 


JUL 




23. 


. .N 


AUG 




21. 


. .N 


SEP 




17. 


. .N 





DIS- 






SEDI- 




CHARGE, 






MENT, 




INST. 




SEDI- 


DIS- 




CUBIC 


TEMPER- 


MENT, 


CHARGE, 




FEET 


ATURE 


SUS- 


SUS- 


TIME 


PER 


WATER 


PENDED 


PENDED 




SECOND 


(DEG C) 


(MG/L) 


(T/DAY) 




(0061) 


(00010) 


(80154) 


(80155) 


1020 


6300 


12.5 


3 


51 


1330 


7780 


13.0 


15 


315 


1700 


42200 


12.0 


51 


5810 


1230 


86400 


10.5 


355 


82800 


0930 


10600 


9.0 


37 


1060 


1000 


8300 


11.5 


22 


493 


0950 


9140 


12.0 


27 


666 


1200 


10100 


12.5 


14 


382 


1000 


15400 


12.0 


14 


582 


1000 


16000 


11.5 


9 


389 


1000 


10700 


12.5 


9 


260 


1000 


8390 


12.5 


9 


204 



SACRAMENTO RIVER BASIN 
1 1379500 ELDER CREEK NfEAR PASKENTA, CA 



125 



LOCATION.-Lat 40''0r29". long lll^SO'SI", in SE 1/4 NW 1/4 sec.I4, T.25 N., R.6 W.. Tehama County, Hydrologic Unit 18020103, on left 

bank 2.5 mi downstream from South Fork Elder Creek, 8.2 mi northwest of Roumoy, and 10 mi north of Paskenta. 
DRAINAGE AREA. --92.4 mi^. 

PERIOD OF RECORD.-October 1948 to current year. Monthly discharge only for some periods, published in WSP 1315-A. 
CHEMICAL DATA: Water years 1959-66. 
WATER TEMPERATURE: Water year 1963. 
SEDIMENT DATA: Water years 1963-70. 

REVISED RECORDS.-WSP 1515: 1956. WDR CA-70-2: 1967(P). WDR CA-75-4: 1966-67(P), 1969-71(P), 1973(P). WDR CA-78-4: Drainage 
area. WDR CA-94-4: 1993(P). 

GAGE— Water-stage recorder. Datum of gage is 718.1 ft above sea level. Prior to Aug. 13, 1965, water-stage recorder at site 300 ft downstream at 
datum 5.13 ft lower. 

REMARKS. -Records good. No regulation or large diversion upstream from station. See schematic diagram of upper Sacramento River basin. 

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 17,700 ft^/s, Feb. 28, 1983, gage height, 12.10 ft, from rating curve extended 
above 5,200 ft^/s on basis of slope-area measurements at gage height 1 1.34 ft and of peak flow; maximum gage height, 13.90 ft, Feb. 24, 1958, 
site and datum then in use; no flow at times some years. 

EXTREMES FOR CURRENT YEAR.-Peak discharges greater than base discharge of 2,000 ft^/s, or maximum: 

Discharge Gage height Discharge Gage height 



Date 

Dec. 9 
Dec. 31 



Time 

1545 
2345 



(ft7s) 

2,720 
11,500 



(ft) 

6.93 

10.75 



Date 



Jan. 25 



Time 



2300 



(ft'/s) 



3,350 



(ft) 



7.44 



DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



DAY 


OCT 


NOV 


DEC 


JAN 


FEB 


MAR 


APR 


MAY 


JUN 


JUL 


AUG 


SEP 


1 


2.0 


10 


19 


4480 


467 


79 


60 


32 


14 


7.9 


1.3 


1.5 


2 


2.3 


8.7 


18 


1560 


389 


89 


57 


31 


14 


11 


1.2 


1.4 


3 


2.5 


8.0 


17 


986 


324 


79 


54 


30 


17 


7.9 


1.0 


1.3 


4 


2.4 


8.0 


48 


657 


289 


73 


53 


28 


23 


6.3 


.89 


1.2 


5 


2.5 


7.8 


378 


489 


257 


70 


50 


27 


18 


5.5 


.85 


1.1 


6 


2.2 


7.4 


103 


368 


229 


68 


49 


27 


14 


4.7 


.73 


.93 


7 


2.2 


7 .4 


110 


300 


211 


66 


48 


26 


13 


4.3 


.55 


.98 


8 


2.0 


7.4 


182 


259 


196 


63 


47 


25 


12 


3.7 


.42 


.87 


9 


1.9 


7.3 


1170 


229 


180 


61 


44 


25 


11 


3.2 


.39 


.87 


10 


1 .8 


7.1 


926 


205 


172 


60 


43 


24 


12 


3.0 


.56 


.98 


11 


2.0 


7.2 


320 


188 


161 


58 


42 


23 


12 


2.9 


.66 


1.2 


12 


2.3 


7.2 


250 


174 


151 


59 


41 


22 


11 


2.6 


.77 


1.2 


13 


2.4 


7.3 


177 


158 


142 


57 


41 


21 


10 


2.5 


.89 


1.3 


14 


2.5 


7.0 


133 


145 


134 


56 


41 


20 


9.4 


2.5 


.67 


1.9 


15 


2.5 


7.0 


106 


141 


127 


56 


39 


20 


9.0 


2.5 


.54 


3.5 


16 


2.3 


7 .7 


90 


133 


125 


104 


37 


20 


8.6 


2.3 


.62 


3.5 


17 


2.5 


18 


77 


126 


130 


191 


37 


22 


8.3 


2.2 


.51 


3.0 


18 


3.2 


116 


68 


120 


120 


125 


38 


19 


7.6 


2.2 


.64 


3.0 


19 


4.7 


258 


61 


114 


115 


108 


55 


18 


7.0 


2.0 


.81 


2.7 


20 


4.2 


101 


57 


114 


110 


104 


54 


17 


6.5 


1.8 


2.1 


2.2 


21 


4.2 


49 


62 


112 


107 


105 


51 


17 


6.2 


1.8 


3.4 


2.0 


22 


4.3 


74 


65 


312 


103 


101 


49 


17 


6.4 


1.6 


2.6 


1.8 


23 


4.6 


56 


59 


227 


98 


99 


49 


21 


6.3 


1.4 


2.1 


1.8 


24 


4.7 


38 


53 


219 


93 


93 


44 


21 


6.0 


1.5 


2.0 


1.5 


25 


4.7 


30 


51 


1730 


89 


89 


39 


19 


5.7 


1.4 


2.0 


1.4 


26 


4.7 


26 


174 


1540 


87 


86 


37 


17 


5.4 


1.4 


1.9 


1.4 


27 


4.5 


23 


426 


747 


85 


82 


35 


18 


5.1 


1.2 


1.8 


1.5 


28 


4.5 


21 


346 


1100 


82 


78 


34 


18 


5.4 


1.3 


1.6 


1.2 


29 


47 


19 


1470 


776 





70 


34 


17 


7.0 


1.1 


1.8 


1.2 


30 


45 


18 


1750 


589 





67 


33 


16 


8.1 


1.1 


1.8 


1.2 


31 


14 


--- 


3570 


510 


--- 


64 





14 





1.4 


1.7 





TOTAL 


192.6 


969.5 


12336 


18808 


4773 


2560 


1335 


672 


299.0 


96.2 


38.80 


49.63 


MEAN 


6.21 


32.3 


398 


607 


170 


82.6 


44.5 


21.7 


9.97 


3.10 


1.25 


1.65 


MAX 


47 


258 


3570 


4480 


467 


191 


60 


32 


23 


11 


3.4 


3.5 


MIN 


1.8 


7.0 


17 


112 


82 


56 


33 


14 


5.1 


1.1 


.39 


.87 


AC -FT 


382 


1920 


24470 


37310 


9470 


5080 


2650 


1330 


593 


191 


77 


98 



126 



SACRAMENTO RIVER BASIN 



1 1379500 ELDER CREEK NEAR PASKENTA, CA— Continued 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1949 - 1997, BY WATER YEAR (WY) 

OCT NOV DEC JAN FEB MAR APR MAY JUN 



JUL 



AUG 



MEAN 


9.38 


48.1 


136 


255 


276 


232 


144 


75.7 


27.4 


8.15 


3.14 


3.01 


MAX 


102 


310 


649 


1208 


1636 


1176 


497 


355 


128 


28.7 


11.1 


11.3 


(WY) 


1958 


1974 


1984 


1995 


1958 


1983 


1958 


1983 


1967 


1983 


1983 


1978 


MIN 


.66 


2.89 


4.06 


5.38 


7.00 


22.6 


13.8 


13.4 


2.52 


.32 


.002 


.14 


(WY) 


1992 


1991 


1991 


1991 


1977 


1964 


1977 


1977 


1977 


1977 


1994 


1991 



SUMMARY STATISTICS 

ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC -FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1949 - 1997 



50429.7 






42129.73 












138 






115 






101 
303 
6.69 




1983 
1977 


3570 


Dec 


31 


4480 


Jan 


1 


7650 


Dec 22 


1964 


1.2 


Sep 


1 


.39 


Aug 


9 


.00 


Aug 6 


1950 


1.3 


Sep 


6 


.58 


Aug 


6 


.00 


Aug 14 


1950 








11500 


Dec 


31 


17700 


Feb 28 


1983 








10.75 


Dec 


31 


13.90 


Feb 24 


1958 


100000 






83560 






72940 






366 






214 






232 






38 






19 






19 






1.9 






1.3 






1.5 







SACRAMENTO RIVER BASIN 
1 1381500 MILL CREEK NEAR LOS MOLINOS, CA 



127 



LOCATION.--Ut 40°03'17", long 122°0r23", in NE 1/4 NW 1/4 sec.6, T.25 N., R.l W., Tehama County. Hydrologic Unit 18020103, on right 
bank 4.5 mi northeast of Los Molinos and 5.5 mi upstream from mouth. 

DRAINAGE AREA.--131 mi^. 

PERIOD OF RECORD.-September 1909 to August 1913 (fragmentary), October 1928 to current year. 

REVISED RECORDS.--WSP 1315-A: 1929(M). WSP 1931: Drainage area. WSP2131: 1938(M). 

GAGE.-Water-stage recorder. Elevation of gage is 385 ft above sea level, from topographic map. Prior to September 1913. nonrecording gage at 
site 0.3 mi downstream at different datum. 

REMARKS. --Records good. No storage or large diversion upstream from station. See schematic diagram of upper Sacramento River basin. 

EXTREMES FOR PERIOD OF RECORD (water years 1929-96).-Maximum discharge, 36,400 ft'/s, Dec. 11, 1937, gage height, 23.4 ft, from 
floodmarks, from rating curve extended above 14,0(X) ftVs on basis of step-backwater computation and slope-area measurement of peak flow; 
minimum, 49 ft'/s, Dec. 13, 1932. 

EXTREMES FOR CURRENT YEAR.-Peak discharges greater than base discharge of 2,400 ft'/s, or maximum: 







Discharge 


Gage height 






Discharge 


Gage height 


Date 


Time 


(ft^/s) 


(ft) 


Date 


Time 


(ft'/s) 


(ft) 


Dec. 10 


0730 


6,570 


10.51 


Jan. 22 


1530 


3,970 


7.47 


Jan. 1 


0515 


20,600 


17.10 


Jan. 25 


1200 


5,700 


9.08 



DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAO-Y MEAN VALUES 



NOV 



DEC 



JAN 



APR 



MAY 



JUN 



JUL 



1 


105 


120 


214 


14400 


670 


258 


291 


353 


283 


191 


131 


123 


2 


105 


116 


194 


5600 


594 


275 


276 


346 


277 


181 


130 


123 


3 


105 


116 


177 


2800 


526 


265 


266 


338 


271 


178 


130 


124 


4 


105 


115 


172 


1660 


482 


252 


264 


343 


406 


174 


129 


122 


5 


101 


115 


996 


1170 


445 


245 


257 


347 


326 


173 


128 


121 


6 


101 


113 


501 


873 


411 


244 


250 


353 


288 


171 


128 


120 


7 


101 


113 


374 


720 


395 


245 


242 


358 


275 


167 


126 


120 


e 


101 


113 


596 


630 


382 


246 


238 


364 


267 


162 


124 


120 


9 


98 


112 


1070 


576 


363 


244 


237 


361 


264 


161 


123 


120 


10 


98 


112 


2880 


518 


349 


244 


231 


381 


271 


160 


124 


120 


11 


98 


112 


1040 


472 


337 


249 


227 


402 


256 


158 


125 


120 


12 


99 


111 


900 


441 


328 


253 


229 


402 


255 


154 


125 


119 


13 


99 


111 


849 


407 


313 


248 


229 


402 


253 


153 


124 


118 


14 


100 


111 


601 


367 


307 


246 


230 


381 


243 


151 


123 


124 


15 


99 


111 


437 


350 


303 


252 


236 


380 


243 


150 


122 


137 


16 


98 


112 


357 


338 


302 


419 


248 


374 


239 


149 


120 


125 


17 


99 


127 


307 


329 


331 


513 


261 


355 


235 


149 


120 


123 


18 


104 


276 


270 


317 


316 


399 


269 


356 


231 


148 


121 


149 


19 


116 


397 


250 


307 


305 


359 


645 


354 


224 


147 


121 


130 


20 


106 


426 


238 


323 


300 


342 


531 


349 


217 


145 


144 


124 


21 


104 


231 


249 


483 


292 


355 


683 


334 


211 


142 


147 


121 


22 


103 


431 


256 


2150 


289 


362 


599 


317 


205 


141 


133 


120 


23 


105 


334 


250 


1050 


281 


361 


604 


330 


201 


139 


130 


120 


24 


107 


221 


231 


735 


274 


358 


484 


328 


195 


139 


129 


118 


25 


132 


204 


223 


3290 


270 


356 


422 


291 


192 


138 


127 


118 


26 


121 


185 


1250 


2900 


270 


352 


408 


280 


189 


137 


126 


118 


27 


114 


175 


1510 


1690 


273 


368 


422 


273 


186 


136 


126 


118 


28 


112 


172 


1010 


1660 


267 


352 


425 


278 


183 


136 


125 


117 


29 


123 


169 


2020 


1180 





323 


375 


277 


182 


135 


125 


115 


30 


137 


165 


3820 


885 





312 


352 


277 


184 


133 


125 


115 


31 


125 





10600 


745 





314 





285 





132 


125 





TOTAL 


3321 


5326 


33842 


49366 


9975 


9611 


10431 


10569 


7252 


4730 


3936 


3662 


MEAN 


107 


178 


1092 


1592 


356 


310 


348 


341 


242 


153 


127 


122 


MAX 


137 


431 


10600 


14400 


670 


513 


683 


402 


406 


191 


147 


149 


MIN 


98 


111 


172 


307 


267 


244 


227 


273 


182 


132 


120 


115 


AC -FT 


6590 


10560 


67130 


97920 


19790 


19060 


20690 


20960 


14380 


9380 


7810 


7260 



128 



SACRAMENTO RIVER BASIN 
1 1381500 MILL CREEK NEAR LOS MOLINOS, CA— Continued 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1929 - 1997, BY WATER YEAR (WY) 

OCT NOV DEC JAN FEB MAR APR MAY JUN 



JUL 



AUG 



SEP 



MEAN 


124 


199 


353 


450 


469 


449 


431 


440 


326 


176 


117 


106 


MAX 


684 


1039 


1365 


1837 


1744 


1278 


862 


923 


736 


456 


230 


168 


(WYl 


1963 


1974 


1965 


1970 


1986 


1983 


1982 


1938 


1983 


1983 


1983 


1983 


MIN 


76.0 


75.1 


87.4 


96.8 


98.6 


107 


112 


122 


94.9 


67.8 


61.4 


65.4 


(WY) 


1930 


1930 


1977 


1977 


1977 


1977 


1977 


1977 


1931 


1931 


1931 


1931 



SUMMARY STATISTICS 

ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC-FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1929 - 1997 



152343 






152021 










416 






416 






303 

576 
93.6 


1974 
1977 


10600 


Dec 


31 


14400 


Jan 


1 


14400 


Jan 1 1997 


98 


Oct 


9 


98 


Oct 


9 


52 


Dec 12 1932 


99 


Oct 


9 


99 


Oct 


9 


GO 


Jul 28 1931 








20600 


Jan 


1 


36400 


Dec 11 1937 








17.10 


Jan 


1 


23.40 


Dec 11 1937 


302200 






301500 






219200 




757 






597 






577 




273 






244 






178 




111 






115 






91 





SACRAMENTO RIVER BASIN 
11 382000 THOMES CREEK AT PASKENTA, CA 



129 



LOCATION.--Ut 39°53"16", long 122''31'41", in SE 1/4 SW 1/4 sec. 34, T.24 N., R.6 W.. Tehama County, Hydrologic Unit 18020103, on left 
bank 1 .0 mi downstream from highway bridge and 1 .2 mi downstream from Digger Creek at Paskenta. 

DRAINAGE AREA.--203 mi^. 

PERIOD OF RECORD. --October 1920 to September 1996; October 1996 to September 1997, stage only (discontinued). Monthly discharge only 
for some periods, published in WSP 1315-A. Prior to 1943, published as Thomas Creek at Paskenta. 
CHEMICAL DATA: Water years 1959-81. 
WATER TEMPERATURE: Water years 1962-79, 1981-83. 
SEDIMENT DATA: Water years 1963-73, 1981-83. 

REVISED RECORDS.-WSP 1345: 1923, 1924-28(M), 1938, 1940(M). WDR CA-78-4: Drainage area. WDR CA-79-4: 1965(M). 
WDR CA-81-4: 1980(M). WDR CA-86-4. 

GAGE— Water-stage recorder and crest-stage gage. Elevation of gage is 720 ft above sea level, firom topographic map. Prior to June 20, 1942, 
nonrecording gage and water-stage recorder at several sites about 1.5 mi upstream at different datums; June 21, 1942, to Sept. 30, 1959, water- 
stage recorder at site 1 .4 mi upstream at datum 732.85 ft and Oct. 1, 1959. to Oct. 9, 1974, at datum 731.10 ft above sea level. 

REMARKS. -Records fair. No storage or large diversions upstream from station. See schematic diagram of upper Sacramento River basin. 

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 37,800 ft^/s, Dec. 22, 1964, gage height, 12.7 ft, from floodmarks, present site 
and datum, from rating curve extended above 6,000 ft-'/s on basis of slope-area measurements at gage height 10. 1 ft and of peak flow; no flow 
at times some years. 



MAX 



GAGE HEIGHT FEET, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

MAX MIN MAX MIN MAX MIN MAX MIN 





OCTOBER 


NOVEMBER 


DECEMBER 


JANUARY 


FEBRUARY 


MAR 


CH 


1 


1.79 


1.77 


2.14 


2.09 


3.75 


2.82 


11.30 


9.76 


5.37 


5.00 


3.58 


3.56 


2 


1.80 


1.79 


2.09 


2.08 


3.35 


3.06 


10.08 


6.94 


5.00 


4.77 


3.69 


3.56 


3 


1.81 


1.78 


2.08 


2.06 


3.12 


3.02 


7.36 


6.05 


4.77 


4.59 


3.63 


3.56 


4 


1.80 


1.77 


2.06 


2.04 


7.01 


2.99 


6.05 


5.53 


4.59 


4.45 


3.56 


3.50 


5 


1.80 


1.79 


2.04 


2.02 


7.62 


4.47 


5.53 


5.05 


4.45 


4.31 


3.50 


3.50 


6 


1.80 


1.78 


2.03 


2.00 


4.48 


3.85 


5.05 


4.67 


4.31 


4.21 


3.50 


3.50 


7 


1.78 


1.75 


2.02 


2.00 


5.59 


3.66 


4.67 


4.38 


4.21 


4 .17 


3.50 


3.49 


8 


1.77 


1.75 


2.01 


1.99 


5.92 


4.76 


4.38 


4.18 


4.17 


4.09 


3.49 


3.49 


9 


1.77 


1.75 


2.00 


2.00 


6.63 


4.75 


4.18 


4.05 


4.09 


4.04 


3.49 


3.48 


10 


1.77 


1.75 


2.02 


1.99 


6.10 


5.35 


4.05 


3.97 


4.04 


3.98 


3.48 


3.48 


11 


1.78 


1.75 


1.99 


1.98 


6.10 


4.94 


3.97 


3.92 


3.98 


3.92 


3.48 


3.48 


12 


1.78 


1.78 


1.99 


1.98 


5.91 


4.87 


3.92 


3.86 


3.92 


3.87 


3.48 


3.48 


13 


1.78 


1.77 


1.99 


1.97 


5.27 


4.67 


3.86 


3.77 


3.87 


3.81 


3.48 


3.47 


14 


1.78 


1.76 


1.98 


1.96 


4.74 


4.36 


3.77 


3.72 


3.81 


3.80 


3.47 


3.45 


15 


1.78 


1.75 


1.99 


1.97 


4.40 


4.13 


3.72 


3.71 


3.80 


3.80 


3.45 


3.45 


16 


1.78 


1.75 


2.10 


1.99 


4.16 


4.00 


3.71 


3.67 


3.80 


3.80 


4.69 


3.45 


17 


1.78 


1.75 


2.37 


2.10 


4.02 


3.91 


3.67 


3.64 


3.86 


3.80 


4.69 


4.08 


18 


1.85 


1.77 








3.93 


3.78 


3.64 


3.60 


3.86 


3.79 


4.08 


3.89 


19 


1.85 


1.84 








3.82 


3.68 


3.60 


3.58 


3.79 


3.79 


3.89 


3.83 


20 


1.88 


1.85 


--- 


--- 


3.86 


3.64 


3.58 


3.58 


3.79 


3.79 


3.83 


3.83 


21 


1.86 


1.83 


4.11 


3.61 


4.04 


3.75 


3.58 


3.58 


3.79 


3.75 


3.86 


3.83 


22 


1.89 


1.83 


4.23 


3.65 


3.87 


3.70 


4.27 


3.58 


3.75 


3.71 


3.86 


3.82 


23 


1.90 


1.88 


4.11 


3.64 


3.77 


3.61 


3.79 


3.58 


3.71 


3.67 


3.82 


3.79 


24 


1.91 


1.89 


3.72 


3.45 


3.66 


3.53 


4.67 


3.54 


3.67 


3.64 


3.79 


3.75 


25 


1.92 


1.88 


3.48 


3.28 


3.74 


3.54 


6.40 


4.67 


3.64 


3.61 


3.75 


3.73 


26 


2.13 


1.92 


3.28 


3.12 


6.49 


3.72 


6.30 


5.57 


3.61 


3.61 


3.73 


3.73 


27 


2.13 


2.02 


3.12 


3.04 


6.20 


5.49 


5.57 


5.12 


3.61 


3.61 


3.73 


3.68 


28 


2.02 


1.97 


3.05 


3.00 


5.91 


5.51 


6.50 


5.12 


3.61 


3.58 


3.68 


3.63 


29 


2.48 


1.96 


3.03 


2.94 


7.47 


5.65 


5.73 


5.31 








3.63 


3.58 


30 


2.51 


2.19 


2.94 


2.81 


10.70 


5.56 


5.31 


5.05 








3.58 


3.55 


31 


2.19 


2.14 








11.15 


8.06 


5.35 


5.02 








3.55 


3.50 



2.51 



1.75 



2.82 



11.30 



3.54 



5.37 



3.58 



4.69 



3.45 



130 SACRAMENTO RIVER BASIN 

U 382000 THOMES CREEK AT PASKENTA, CA— Continued 
GAGE HEIGHT FEET, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN 

MAY JUNE JULY AUGUST SEE>TEMBER 



JAY 


MAX 


MIN 




APRIL 


1 


3.50 


3.46 


2 


3.46 


3.43 


3 
4 

5 

6 

7 

8 

9 

10 


3.43 


3.41 


— 


... 


11 








12 








13 








14 








15 








16 








17 








18 








19 








20 


3.94 


3.82 


21 


3.97 


3.77 


22 


3.97 


3.74 


23 


4.02 


3.74 


24 


3.79 


3.64 


25 


3.64 


3.55 


26 


3.55 


3.50 


27 


3.50 


3.47 


28 


3.47 


3.44 


29 








30 








31 









SACRAMENTO RIVER BASIN 
11383500 DEER CREEK NEAR VINA, CA 



131 



LOCATION.-Lat 40°00'51", long 12r56'50", in NW 1/4 NE 1/4 sec.23, T.25 N., R.l W., Tehama County, Hydrologic Unit 18020103, on left 
bank 0.5 mi upstream from irrigation diversion dam and 7.9 mi northeast of Vina. 

DRAINAGE AREA.--208 mil 

PERIOD OF RECORD.-October 191 1 to September 1915. March 1920 to current year. December 1937 to January 1939 first published in WDR 
CA-94-4. Monthly discharge only for some periods, published in WSP 1315-A. 

REVISED RECORDS.--WSP 1315-A: 1940-42(M). WSP 1931: Drainage area. 

GAGE.-Water-stage recorder. Datum of gage is 479.2 ft above sea level, from river-profile survey. Prior to Oct. 9, 1928, nonrecording gage at site 
0.8 mi downstream at different datum. Oct. 9, 1928, to Jan. 19, 1939, water-stage recorder at present site at datum 2.64 ft higher. 

REMARKS. -Records good. No storage or large diversions upstream from station. See schematic diagram of upper Sacramento River basin. 

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 24,000 ft'/s, Jan. 1, 1997, gage height, 15.56 ft, from rating curve extended above 
9,200 ft'/s; maximum gage height, 19.20 ft, Dec. 10, 1937; minimum, 43 ft^/s, Dec. 13, 1932. 

EXTREMES FOR CURRENT YEAR.-Peak discharges greater than base discharge of 2,500 ft'/s, or maximum: 

Discharge Gage height Discharge Gage height 

Date Time (ft'/s) (ft) Date Time (ft'/s) (ft) 



Dec. 10 
Jan. 1 



0730 
0615 



6,200 
24,000 



10.19 
15.56 



Jan. 26 



0115 



6,260 



9.09 



DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



NOV 



APR 



AUG 



1 


108 


128 


174 


20100 


1110 


323 


342 


302 


169 


157 


100 


94 


2 


109 


123 


187 


9750 


1010 


346 


321 


285 


167 


139 


100 


93 


3 


110 


122 


155 


4480 


916 


333 


312 


273 


165 


132 


99 


96 


4 


110 


122 


151 


2760 


840 


311 


303 


262 


221 


128 


99 


95 


5 


109 


121 


981 


1960 


770 


307 


291 


252 


207 


126 


98 


94 


6 


108 


119 


525 


1470 


705 


302 


282 


248 


174 


122 


97 


94 


7 


108 


118 


353 


1220 


663 


303 


278 


241 


164 


121 


97 


93 


8 


110 


118 


474 


1040 


627 


303 


272 


236 


159 


120 


96 


93 


9 


112 


118 


1460 


924 


585 


297 


273 


230 


168 


118 


95 


93 


10 


112 


118 


3580 


828 


557 


296 


264 


224 


188 


118 


95 


93 


11 


112 


118 


1390 


759 


532 


306 


254 


220 


169 


118 


97 


95 


12 


112 


118 


1200 


702 


511 


307 


247 


215 


166 


117 


97 


95 


13 


113 


118 


1050 


611 


480 


293 


244 


209 


173 


116 


96 


95 


14 


113 


118 


762 


564 


458 


289 


249 


206 


162 


115 


95 


105 


15 


113 


118 


550 


548 


453 


303 


247 


202 


157 


112 


94 


135 


16 


113 


120 


444 


526 


443 


423 


240 


198 


152 


114 


93 


111 


17 


113 


142 


377 


506 


483 


577 


238 


196 


147 


114 


92 


103 


18 


115 


293 


324 


486 


456 


490 


247 


195 


144 


114 


92 


127 


19 


136 


268 


292 


463 


432 


430 


472 


189 


142 


113 


95 


118 


20 


124 


363 


272 


467 


417 


407 


379 


185 


138 


112 


122 


104 


21 


119 


209 


280 


592 


398 


421 


442 


181 


137 


109 


125 


101 


22 


117 


425 


296 


2130 


386 


436 


423 


178 


136 


107 


104 


102 


23 


118 


384 


289 


1430 


370 


433 


459 


200 


135 


106 


99 


101 


24 


119 


219 


267 


1040 


354 


428 


406 


245 


133 


106 


98 


99 


25 


140 


184 


255 


3370 


345 


423 


363 


198 


131 


106 


98 


99 


26 


133 


165 


846 


4220 


350 


412 


340 


184 


130 


104 


97 


99 


27 


127 


153 


2010 


2490 


353 


413 


326 


180 


128 


104 


96 


98 


28 


121 


147 


1600 


2280 


337 


395 


318 


176 


126 


103 


96 


95 


29 


135 


144 


2920 


1780 





368 


327 


176 


125 


103 


95 


95 


30 


154 


139 


5870 


1410 





359 


306 


172 


131 


103 


95 


96 


31 


138 


--- 


14800 


1210 


- — 


367 





167 





102 


95 





TOTAL 


3681 


5152 


44134 


72116 


15341 


11401 


9465 


6625 


4644 


3579 


3047 


3011 


MEAN 


119 


172 


1424 


2326 


548 


368 


316 


214 


155 


115 


98.3 


100 


MAX 


154 


425 


14800 


20100 


1110 


577 


472 


302 


221 


157 


125 


135 


MIN 


108 


118 


151 


463 


337 


289 


238 


167 


125 


102 


92 


93 


AC -FT 


7300 


10220 


87540 


143000 


30430 


22610 


18770 


13140 


9210 


7100 


6040 


5970 



132 



SACRAMENTO RIVER BASIN 
1 1 383500 DEER CREEK NEAR VINA, CA— Continued 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1912 - 1997, BY WATER YEAR (WY) 

OCT NOV DEC JAN FEB MAR APR MAY JUN 



MEAN 


113 


195 


381 


548 


621 


582 


533 


389 


199 


117 


97.5 


94.6 


MAX 


775 


984 


1825 


2458 


2600 


2105 


1494 


1193 


572 


267 


194 


174 


(WY) 


1963 


1974 


1956 


1970 


1986 


1983 


1982 


1995 


1983 


1983 


1983 


1983 


MIN 


63.4 


65.2 


82.5 


87.4 


95.3 


109 


99.5 


77.2 


66.1 


55.8 


53.3 


55.2 


(WY) 


1935 


1930 


1931 


1991 


1977 


1977 


1977 


1924 


1924 


1931 


1931 


1931 



SUMMARY STATISTICS 

ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC-FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



FOR 199 6 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1912 - 1997 



183406 






182196 










501 






499 






321 
700 
86.2 


1983 
1977 


14800 


Dec 


31 


20100 


Jan 


1 


20100 


Jan 1 1997 


107 


Sep 


3 


92 


Aug 


17 


52 


Aug 25 1931 


107 


Sep 


1 


94 


Sep 


4 


53 


Aug 21 1931 








24000 


Jan 


1 


24000 


Jan 1 1997 








15.56 


Jan 


1 


19.20 


Dec 10 1937 


363800 






361400 






232900 




965 






793 






680 




252 






184 






144 




112 






98 






79 





SACRAMENTO RIVER BASIN 



133 



Black Butte Lake 

143,676 acre-feet 

Since 1963 






Stony Creek 



Stony Gorge Res 

50,380 acre-feet 

Since 1928 



~|3861 



J_ 



East Park Res ^3851 
50,889 acre-feet 
Since 1910 



4475, 



'A 



i 



3890 



EXPLANATION 

Gaging station and abbreviated number 
(Complete number as given in the station 
description is 1 1447500) 

Stream, open flume, or canal 
showing direction of flow 



IS 



^ 
a 



/Vort/? For/f/511^ 


ey Reservoir 
D acre-feet 
e1975 


Cache Creek 


Indian Val 

300,00 

Sine 



Moulton Weir 
Bypass 

Colusa Weir 
Bypass 

3895 

Butte Slough 



Tisdale Bypass 
3905 



4071.5 



Yuba 



-A- 
4210 



River 



Colusa Basin 




Bear 



-/y 



River 



Fremont Weir 

Cross Canal 

4255 



Kelsey Creek 

A 



4495j^ 



Clear Lake 

319,000 acre-feet 

Since 1915 

-A — 



■A 



4500 



Lake Berryessa , 
1,592,000 acre-feet 
Since 1956 



.S 
S 
is 



4240 



-A- 



4238 



4270 A 



^ 



,4333 



Folsom Lake 
1,010,300 acre-feet !<■ 
Since 1956 



4455 



4542.1 



.S 






Figure 27. Diversions and storage in lower Sacramento River basin. 



134 



SACRAMENTO RIVER BASIN 
RESERVOIRS IN STONY CREEK BASIN, CA 



1 1385100 EAST PARK RESERVOIR NEAR STONYFORD.--Ut 39°2r24". long 122°30'53", in SW 1/4 NE 1/4 sec.3. T.17 N., R.6 W., Colusa 
County, Hydrologic Unit 1 8020 115, near south side of spillway section on East Park Dam on Little Stony Creek, 1 .9 mi southeast of Stonyford. 
DRAINAGE AREA, 98 2 mi'. PERIOD OF RECORD. October 1969 to current year. GAGE, nonrecording gage read once daily. Datum of 
gage is sea level (levels by U.S. Bureau of Reclamation). 

REMARKS. --Reservoir is formed by a concrete arch-type dam. Storage began in 1910. Capacity, 48,210 acre-ft, between elevations 
1 , 1 3 1 .68 ft, invert of sluice pipe, and 1 , 1 98. 1 8 ft, crest of spillway. Capacity increased to 50,889 acre-ft with the addition of flashboards to an 
elevation of 1,199.68 ft. Dead storage, 279 acre-ft. Records of contents provided by U.S. Bureau of Reclamation. See schematic diagram of 
lower Sacramento River basin. 

EXTREMES FOR PERIOD OF RECORD.-Maximum contents, 53,500 acre-ft, Mar. 30, 1974, elevation, 1,201.10 ft; minimum, 
280acre-ft, Aug, StoOct. 31, 1972, Apr. 30 to Nov. 1, 1977, elevation. 1,131.68 ft. 

EXTREMES FOR CURRENT YEAR.-Maximum contents, 51,618 acre-ft, Jan. 2, elevation, 1,200.08 ft; minimum. 8,597 acre-ft. Sept 30. 
elevation, 1,163.16 
1 1386100 STON'*' GORGf RESERVOIR NEAR ELK CREEK.-Lat 39°35'09", long !22°3r54", ;;i NE 1/4 SE 1/4 sec. 16. T.20N., R.6 W., Glenn 
County, Hydrologic Unit 1 80201 1 5, on south end of Stony Gorge Dam on Stony Creek, 1 .3 mi southeast of Elk Creek. DRAINAGE AREA, 
301 mi^. PERIOD OF RECORD, October 1969 to current year. GAGE, nonrecording gage read once daily. Datum of gage is sea level (levels 
by US. Bureau of Reclamation). 

REMARKS— Reservoir is formed by slab and buttress-type dam. Storage began in 1928. Capacity, 50,380 acre-ft between elevations 
728.0 ft, top of low intake, and 841.0 ft, crest of spillway. No dead storage. Records of contents provided by U.S. Bureau of Reclamation. See 
schematic diagram of lower Sacramento River basin. 

EXTREMES FOR PERIOD OF RECORD.-Maximum contents, 54,630 acre-ft. Mar. 26. 1971, elevation. 844.20 ft; minimum, 
3,810 acre-ft, Nov. 6, 1971, elevation. 779.20 ft. 

EXTREMES FOR CURRENT YEAR.-Maximum contents, 50,280 acre-ft, June 9, elevation. 840.92 ft; minimum, 10,869 acre-ft. Sept 4. 
elevation, 797.28 ft. 

MONTHEND ELEVATION AND CONTENTS AT 0800 HOURS, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

Change in Change in 

Elevation Contents contents Elevation Contents contents 

Date (feet) (acre-feet) (acre-feet) (feet) (acre-feet) (acre-feet) 



1 1385100 EAST PARK RESERVOIR 



11386100 STONY GORGE RESERVOIR 



Sept. 30 1,194.94 

Oct. 31 1,193.20 

Nov. 30 1.193.68 

Dec. 31 1,199.00 

CALYR1996 

Jan. 31 1,198.68 

Feb. 28 1,198.28 

Mar. 31 1,198.22 

Apr. 30 1,197.60 

May 31 1,193.76 

June 30 1,189.64 

July 31 1,185.06 

Aug. 31 1.179.70 

Sept. 30 1,163.16 

WTR YR 1997 



42,713 


-3.179 


39.921 


-2,792 


40.682 


761 


49,665 


8,983 



3,536 



49,099 


-566 


48,391 


-708 


48,284 


-107 


47.202 


-1,082 


40,809 


-6.393 


34,557 


-6.252 


28,342 


-6.215 


22,046 


-6,296 


8,597 


-13.449 



827.54 


34,560 


-538 


829.50 


36,660 


2,100 


829.81 


36,997 


337 


834.30 


42,096 


5,099 



1,121 



830.99 


38,300 


-3,796 


830.25 


37.481 


-819 


840.26 


49,429 


11,948 


840.38 


49,584 


155 


840.78 


50.099 


515 


834.66 


42,520 


-7,579 


818.82 


26,067 


-16.453 


797.64 


11,060 


-15.007 


799.73 


12,207 


1,147 



-34,116 



-22,353 



SACRAMENTO RIVER BASIN 
1 1389000 SACRAMENTO RIVER AT BUTTE CITY. CA 



135 



LOCATION.-Ut 39°27'28", long 121''59'35", in SE 1/4 NE 1/4 sec.32, T.19 N., R.l W., Glenn County, Hydrologic Unit 18020104, on left bank 
100 ft upstream from highway bridge, 0.5 mi south of Butte City, and at mile 1 15.8 upstream from Sacramento. 

DRAINAGE AREA.--12,080 mil 

PERIOD OF RECORD.--April 1921 to June 1995 (water discharge), (priorto October 1938, low-water periods only), July 1995 to September 1997 
(gage heights only) (discontinued). Monthly discharge only for some periods, published in WSP 1315-A. 
CHEMICAL DATA: Water years 1955-66. 

WATER TEMPERATURE: Water years 1955-58, 1960-67, 1969-81. 
SEDIMENT DATA: Water years 1978-80. 

REVISED RECORDS.-WDR CA-86-4: Drainage area. 

GAGE. -Water-stage recorder and crest-stage gage. Datum of gage is 2.92 ft below sea level. Prior to December 1930, at site 0.5 mi upstream at 
same datum. 

REMARKS— Natural flow affected by storage reservoirs, power developments, diversions for irrigation, return flow from irrigated areas, and 
bypassing for flood control. When discharge exceeds about 90,000 ft''/s, overbank flow into Butte basin occurs upstream from left (east) bank 
levee. The combined overbank flow and tributary runoff then flows south on the east bank floodplain into the Butte Sink and Sutter Bypass. 
See schematic diagram showing diversions and storage in the lower Sacramento River basin. Interruptions in record were due to malfunction 
of the recording instrument. 

EXTREMES FOR PERIOD OF RECORD (since 1941).-Maximum gage height, 96.87 ft, Feb. 7, 1942; minimum gage height prior to 
October 1990 is unknown. Minimum gage height since October 1990, 67.03 ft, June 10, 1994. 

EXTREMES FOR CURRENT YEAR.-Maximum gage height, 95.02 ft, Jan. 2; minimum 69.52 ft, Oct. 17. 

GAGE HEIGHT FEET, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 



MAX MIN 
OCTOBER 



NOVEMBER 



MAX MIN 
DECEMBER 



MAX MIN 
JANUARY 



FEBRUARY 



MARCH 



70.93 
70.92 
70.78 
70.75 
70.70 



70.83 
70.74 
70.70 
70.67 
70.54 



70.12 
70.00 
69.96 
69.97 
69.92 



69.98 
69.93 
69.88 
69.89 
69.85 



70.54 
72.99 



70.44 
70.49 



94.02 90.93 
95.02 94.02 
94.50 



86.34 
85.59 
83.78 
81.68 
80.43 



85.57 
83.78 
81.68 
80.23 
79.94 



72.07 71.95 

72.04 71.92 

72.14 71.96 

72.07 71.87 

71.87 71.70 



6 
7 
8 
9 
10 

11 
12 
13 
14 
15 



70.59 
70.55 
70.54 
70.46 
70.46 



70.54 
70.52 
70.43 
70.40 
70.25 



70.27 70.09 

70.10 69.92 

69.93 69.79 

69.80 69.70 

69.73 69.65 



69.89 69.81 

69.89 69.84 

69.88 69.83 
69.84 69.76 
69.96 69.81 

69.99 69.92 

69.95 69.87 

69.89 69.81 
69.84 69.80 
69.91 69.80 



74.49 
72.95 
75.15 
76.98 



72.95 
72.05 
71.88 
75.15 



84.20 76.98 



85.10 84.04 



80.46 
80.14 
79.66 
79.31 
78.50 



80.09 
79.62 
79.30 
78.32 
77.41 



77.46 76.71 

76.93 75.89 

76.16 75.04 

75.25 74.40 

74.56 74.04 



71.73 71.64 

71.65 71.57 

71.59 71.44 

71.44 71.37 

71.39 71.34 

71.36 71.34 

71.36 71.30 

71.31 71.21 

71.22 71.06 

71.09 71.06 



16 
17 
18 
19 
20 



69.67 69.53 
69.60 69.52 
69.62 69.53 



69.91 69.78 

70.02 69.88 

70.16 70.02 

70.77 70.15 

71.69 70.77 



77.28 76.31 
76.37 75.68 
75.81 75.43 



83.38 82.14 
82.27 81.60 
81.73 80.48 



74.19 73.61 

73.70 73.34 

73.62 73.33 

73.34 72.88 

72.88 72.74 



71.54 71.08 

73.31 71.54 

73.62 72.68 

72.68 72.07 

72.07 71.87 



21 
22 
23 

24 
25 



75.58 
75.77 
76.37 
76.18 
75.45 



75.37 
75.50 
75.75 
75.17 
74.40 



88.77 84.07 
88.77 85.27 
88.87 85.07 



72.77 72.52 

72.57 72.41 

72.52 72.34 

72.41 72.25 

72.39 72.20 



71.90 71.85 

71.90 71.81 

71.86 71.74 

71.76 71.65 

71.68 71.61 



26 
27 
28 
29 

30 

31 



70.08 
70.26 
70.18 



69.73 
70.07 
70.10 



74.45 
81.40 
80.87 
81.98 
88.03 
91.03 



73.93 
74.14 
79.53 
80.55 
81.98 
87.96 



91.47 
91.57 
90.07 
87.67 
87.77 
87.23 



88.77 
90.07 
86.97 
86.97 
87.21 
86.33 



72.22 72.12 
72.16 72.04 
72.08 71.99 



71.63 
71.56 
71.44 
71.37 
71.33 
71.31 



71.55 
71.43 
71.36 
71.31 
71.25 
71.27 



MONTH 70.93 69.52 



71.69 69.76 



91.03 70.44 



95.02 80.48 



86.34 71.99 



73.62 71.06 



136 



SACRAMENTO RIVER BASIN 

1 1 389000 SACRAMENTO RIVER AT BUTTE CITY, CA— Continued 

GAGE HEIGHT. FEET, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 



APRIL 



MAX 



HIN 



MAY 



MAX 



MIN 



JXJNE 



MAX 



MIN 



JULY 



MAX MIN 
AUGUST 



MAX MIN 

SEPTEMBER 



1 


71 


.28 


71 


.19 


70 


.76 


70 


.62 


2 


71 


.20 


71 


.03 


70 


.93 


70 


.65 


3 


71 


.08 


70 


.99 


71 


.41 


70 


.72 


i 


71 


.04 


70 


.96 


71 


.03 


70 


.65 


5 


70 


.98 


70 


.83 


70 


.87 


70 


.62 


6 


70 


.83 


70 


.73 


70 


.63 


70 


,52 


7 


70 


.75 


70 


.72 


70 


.68 


70, 


.61 


8 


70 


.73 


70 


.61 


70 


.83 


70, 


,67 


9 


70 


.65 


70 


.57 


70 


.91 


70, 


,83 


10 


70 


.59 


70 


.53 


70 


.91 


70, 


,82 


11 


70 


.54 


70 


.48 


70 


.98 


70, 


,84 


12 


70 


.50 


70 


.39 


71 


.25 


70, 


,98 


13 


70 


.39 


70 


.26 


71 


.28 


71. 


,22 


14 


70 


.40 


70, 


.25 


71, 


.27 


71. 


,03 


15 


70 


.45 


70, 


.37 


71, 


.06 


70. 


,95 


16 


70 


.40 


70, 


,30 


70 


.95 


70, 


,59 


17 


70 


.31 


70 


.17 


70 


.91 


70. 


,67 


18 


70 


.31 


70 


.15 


70 


.94 


70, 


,78 


19 


70 


.70 


70 


.30 


70 


.86 


70, 


,73 


20 


71 


.20 


70 


.70 


70 


.81 


70, 


,61 


21 


71 


.26 


71 


.14 


70 


.70 


70 


,58 


22 


71 


.30 


71 


.20 


70 


.88 


70 


,66 


23 


71 


.27 


70 


.93 


71 


.17 


70 


.79 


24 


71 


.69 


71 


.06 


71 


.46 


71 


.17 


25 


71 


.12 


70 


.67 


71 


.52 


71 


.42 


26 


70 


.67 


69 


.79 


71 


.62 


71 


.48 


27 


70 


.59 


69 


.80 


71 


.62 


71 


.48 


28 


70 


.64 


70 


.53 


71 


.59 


71 


,42 


29 


70 


.75 


70 


.52 


71 


.54 


71 


,25 


30 


70 


.81 


70 


.74 


71 


.27 


70, 


,98 


31 












71 


.00 


70, 


,84 



71.07 70.88 

71.13 71.02 

71.23 71.13 

71.44 71.22 

71.72 71.44 

71.60 71.39 

71.53 71.41 

71.47 71.36 

71.52 71.34 

71.52 71.41 

71.70 71.44 

71.92 71.58 

72.09 71.92 

72.25 72.08 
72.44 72.20 

72.56 72.41 

72.52 72.40 

72.50 72.37 

72.58 72.39 

72.58 72.33 

72.52 72.15 

72.26 72.11 
72.32 72.16 
72.36 72.19 
72.39 72.17 

72.35 72.03 

72.30 71.99 

72.35 72.20 

72.35 72.19 

72.42 72.24 



72.49 72.32 

72.56 72.31 

72.55 72.39 

72.54 72.31 

72.44 72.28 

72.38 72.21 

72.42 72.22 

72.29 72.08 

72.38 72.14 

72.39 72.23 

72.38 72.23 

72.48 72.25 
72.68 72.25 
72.47 72.28 

72.49 72.38 

72.55 72.25 
72.53 72.34 
72.53 72.26 
72.42 72.21 
72.47 72.24 

73.02 72.27 

72.58 72.32 

72.68 72.27 

72.68 72.40 

72.45 72.22 

72.46 72.26 

72.40 72.24 
72.34 72.04 

72.39 72.07 
72.38 72.13 
72.46 72.21 



72.39 72.18 

72.40 72.16 
72.30 72.08 
72.37 72.13 
72.39 72.17 

72.37 72.12 

72.36 72.13 

72.22 71.89 

72.05 71.89 
72.03 71.83 

71.97 71.80 

71.93 71.77 

71.96 71.55 

71.70 71.43 
71.78 71.51 

71.62 71.26 

71.36 70.94 

71.06 70.83 
71.26 70.88 
71.17 70.95 

71,34 71.06 

71.37 70.98 

71.07 70.83 

70.97 70.78 

70.94 70.70 

70.93 70.78 

70.92 70.60 

70.69 70.53 

70.71 70.43 

70.70 70.45 
70.81 70.60 



70.95 70.64 

71.26 70.90 

71.36 71.17 
71.54 71.27 

71.62 71.43 

71.68 71.39 

71.73 71.57 

71.75 71.61 

71.73 71.18 

71.26 70.92 

71.15 70.89 

71.11 70.73 

70.82 70.64 

70.85 70.64 

71.24 70.81 

71.59 71.09 

71.37 71.14 
71.28 70.89 
71.02 70.81 
71.14 70.63 

70.71 70.56 

70.72 70.46 

70.63 70.42 
70.65 70.38 

70.53 70.38 

70.51 70.37 

70.54 70.37 
70.57 70.34 
70.54 70.35 



MONTH 71.69 69.79 



70.52 



72.58 70.88 



73.02 72.04 



72.40 70.43 



71.75 70.34 



SACRAMENTO RIVER BASIN 
1 1389500 SACRAMENTO RIVER AT COLUSA, CA 



137 



LOCATION.-Lat 39''12'51", long 12r59'57", at north end of Jimeno Grant, Colusa County, Hydrologic Unit 18020104, on right bank 60 ft 
downstream from highway bridge at Colusa and at mile 89.4 upstream from Sacramento. 

DRAINAGE AREA.- 12,090 mi^. 

WATER-DISCHARGE RECORDS 

PERIOD OF RECORD.-April 1921 to current year (prior to October 1940, low-water periods only). 

REVISED RECORDS.-WSP 1345: 1952. WDR CA-77-4: Drainage area. 

GAGE.-Water-stage recorder and crest-stage gage. Datum of gage is 2.95 ft below sea level. Prior to December 1 930, water-stage recorder in center 
fender pier 50 ft upstream from bridge at same datum. 

REMARKS— Records good. Natural flow of stream affected by storage reservoirs, including Shasta Lake (station 1 1370000) since 1943, power 
development, bypassing for flood control, diversions for irrigation, and return flow from irrigated areas. When discharge exceeds about 
30,000 ft^/s, flow begins over Colusa Weir, 2.5 mi upstream on left bank, into Butte Sink and Sutter Bypass. See schematic diagram of lower 
Sacramento River basin. 

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge (water years 1941-97), 5 1 ,800 ft^/s. Mar. 4, 1 983, gage height, 68.50 ft; maximum 
gage height, 69.20 ft, Feb. 18, 1942; minimum recorded, 820 ft^/s, July 25, 26, 1931, gage height, 34.79 ft. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



OCT 



NOV 



DEC 



JAN 



FEB 



MAR 



APR 



MAY 



JUN 



JUL 



SEP 



1 


8110 


6430 


7260 


44800 


38800 


10300 


8570 


7300 


8200 


11400 


10800 


7240 


2 


8000 


6240 


7270 


47100 


37900 


10200 


8370 


7180 


8400 


11600 


10700 


7640 


3 


7840 


6220 


7410 


48100 


36000 


10300 


8160 


7690 


8530 


11600 


10600 


8220 


4 


7770 


6070 


7290 


47200 


33700 


10300 


8080 


7280 


8730 


11600 


10600 


8450 


5 


7640 


5990 


7360 


45100 


32300 


9970 


7950 


7090 


9290 


11400 


10800 


8800 


6 


7390 


5930 


12700 


43700 


32500 


9650 


7760 


7370 


9340 


11400 


10800 


8890 


7 


7360 


5950 


13000 


42100 


32100 


9480 


7590 


7340 


9260 


11300 


10700 


9080 


8 


7290 


5950 


11400 


39800 


31500 


9300 


7480 


7510 


9270 


11200 


10400 


9230 


9 


7080 


5860 


17900 


38800 


30800 


9070 


7340 


7600 


9210 


11100 


10000 


9080 


10 


6910 


5880 


27800 


38400 


28800 


8940 


7220 


7410 


9390 


11400 


9910 


8300 


11 


6500 


6080 


38300 


38000 


26000 


8840 


7090 


7530 


9370 


11500 


9820 


7990 


12 


6130 


6050 


38500 


38000 


23700 


8790 


7010 


7800 


9660 


11400 


9710 


7920 


13 


5720 


5940 


38000 


38200 


21300 


8700 


6840 


8230 


10400 


11500 


9520 


7570 


14 


5480 


5810 


37200 


38300 


18700 


8530 


6720 


8250 


10700 


11500 


9100 


7470 


15 


5310 


5800 


35400 


38200 


16700 


8300 


6790 


8060 


11000 


11600 


9070 


7730 


16 


5200 


5820 


33400 


38100 


15400 


8410 


6790 


7840 


11500 


11500 


8970 


8510 


17 


5030 


5950 


31000 


37400 


14300 


9330 


6530 


7480 


11600 


11500 


8420 


8510 


18 


5040 


6210 


27400 


35500 


13900 


12800 


6310 


7790 


11500 


11500 


7870 


8350 


19 


5140 


6680 


24300 


34200 


13500 


11900 


6490 


7600 


11600 


11400 


7760 


7970 


20 


5230 


7870 


22300 


33300 


12500 


10500 


7480 


7480 


11500 


11400 


7900 


7880 


21 


5210 


9460 


21500 


31900 


12100 


10000 


8200 


7270 


11300 


11500 


8110 


7410 


22 


5130 


8590 


21400 


31900 


11700 


9990 


8300 


7330 


10900 


11600 


8250 


7270 


23 


5120 


10700 


22200 


37800 


ell400 


9870 


8170 


7800 


10900 


11600 


7850 


7150 


24 


5210 


10800 


22800 


40400 


ell200 


9680 


8350 


8360 


11100 


11800 


7550 


7050 


25 


5300 


8770 


20300 


38600 


ellOOO 


9470 


7920 


8880 


11000 


11400 


7480 


6930 


26 


5440 


7980 


17800 


41600 


610900 


9340 


6760 


9140 


11000 


11300 


7440 


6900 


27 


5490 


7540 


22300 


43600 


10600 


9190 


5960 


9330 


10800 


11200 


7390 


6860 


28 


5620 


7440 


33800 


41900 


10400 


8990 


6890 


9320 


11000 


11000 


7070 


6770 


29 


5780 


7420 


34800 


39800 





8830 


6890 


9130 


11200 


10700 


6960 


6760 


30 


6370 


7300 


38200 


40000 





8710 


7570 


8700 


11300 


10800 


6720 


6680 


31 


6500 


--- 


42500 


39500 





8660 





8260 





10800 


7040 





TOTAL 


191340 


208730 


742790 


1231300 


599700 


296340 


221580 


245350 


308950 


352500 


275310 


234610 


MEAN 


6172 


6958 


23960 


39720 


21420 


9559 


7386 


7915 


10300 


11370 


8881 


7820 


MAX 


8110 


10800 


42500 


48100 


38800 


12800 


8570 


9330 


11600 


11800 


10800 


9230 


MIN 


5030 


5800 


7260 


31900 


10400 


8300 


5960 


7090 


8200 


10700 


6720 


6680 


AC -FT 


379500 


414000 


1473000 


2442000 


1190000 


587800 


439500 


486700 


612800 


699200 


546100 


465300 


e Estimated. 

























138 



SACRAMENTO RIVER BASIN 
1 1389500 SACRAMENTO RTVER AT COLUSA, CA— Continued 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1946 - 1997, BY WATER YEAR (WY) 



OCT 



NOV 



DEC 



JAN 



JUN 



JUL 



MEAN 


6564 


8786 


13680 


17710 


19210 


16840 


12420 


10440 


8741 


8532 


8227 


7175 


MAX 


12040 


27000 


38000 


39720 


41270 


44450 


31490 


26680 


18730 


13150 


11920 


10510 


(WY) 


1958 


1974 


1984 


1997 


1983 


1983 


1982 


1983 


1983 


1983 


1983 


1967 


MIN 


3219 


3860 


4141 


5193 


5147 


5852 


4966 


5015 


4852 


5073 


5081 


4322 


(WY) 


1978 


1993 


1977 


1991 


1991 


1977 


1994 


1947 


1992 


1992 


1947 


1977 



SUMMARY STATISTICS 

ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC -FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1946 - 1997 



5361150 






4908500 










14650 






13450 




11490 

21790 

5671 




1983 
1977 


42500 


Dae 


31 


48100 


Jan 3 


51300 


Mar 


4 1983 


5030 


Oct 


17 


5030 


Oct 17 


2620 


Oct 


16 1977 


5130 


Oct 


17 


5130 


Oct 17 


2690 


Oct 


12 1977 








48400 


Jan 3 


51800 


Mar 


4 1983 








68.67 


Jan 3 


68.67 


Jan 


3 1997 


10630000 






9736000 




8327000 






30300 






35400 




23900 






11100 






9100 




8250 






6230 






6280 




5320 







SACRAMENTO RIVER BASIN 139 

11 389500 SACRAMENTO RIVER AT COLUSA, CA— Continued 

WATER-QUALITY RECORDS 

PERIOD OF RECORD.-- Water years 1959-66, 1973-80, 1996 to current year. 
CHEMICAL DATA.-Water years 1959-66, 1996 to current year. 
SPECinC CONDUCT ANCE.-Water years 1995 to current year. 
WATER TEMPERATURE.-Water years 1975, 1977-80, 1995 to current year. 
SEDIMENT.-Water years 1973-80, 1996 to current year. 

PERIOD OF DAILY RECORD- 
SPECIFIC CONDUCTANCE: October 1995 to current year. 
WATER TEMPERATURE: October 1995 to current year. 

INSTRUMENTATlON.-Water-quality monitor since October 1995. 

REMARKS. -Interruptions in record were due to malfunction of the recording instrument. 

EXTREMES FOR PERIOD OF RECORD.- 

SPECmC CONDUCTANCE: Maximum i«corded, 201 microsiemens. Mar. 26, 1997; minimum recorded, 93 microsiemens, Jan. 3, 1997. 
WATER TEMPERATURE: Maximum recorded, 21.0°C, May 16, 17, and 19, 1997; minimum recorded, 6.5°C, Jan. 20, 29, 1996. 

EXTREMES FOR CURRENT YEAR- 
SPECIFIC CONDUCTANCE: Maximum recorded, 201 microsiemens. Mar. 26; minimum recorded, 93 microsiemens, Jan. 3. 
WATER TEMPERATURE: Maximum recorded, 21.0°C, May 16, 17, and 19; minimum recorded, 8.0°C, Jan. 13-15, 23, 24. 

WATER-QUALITY DATA, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 



OCT 

09. . 
NOV 

14. . 
DEC 

04. . 

16. . 
JAN 

04.. 
FEB 

12. . 
MAR 

13. . 
APR 

16. . 
MAY 

20. . 
JUN 

03. . 
JUL 

31.. 
AUG 

18. , 
SEP 

25. , 





DIS- 




PH 




BARO- 




OXYGEN, 








CHARGE, 


SPE- 


WATER 




METRIC 




DIS- 




MAGNE- 




INST. 


CIFIC 


VfflOLE 




PRES- 




SOLVED 


CALCIUM 


SIUM, 




CUBIC 


CON- 


FIELD 


TEMPER- 


SURE 


OXYGEN, 


(PER- 


DIS- 


DIS- 




FEET 


DUCT- 


(STAND- 


ATURE 


(MM 


DIS- 


CENT 


SOLVED 


SOLVED 


TIME 


PER 


ANCE 


ARD 


WATER 


OF 


SOLVED 


SATUR- 


(MG/L 


(MG/L 




SECOND 


(US/CM) 


UNITS) 


(DEG C) 


HG) 


(MG/L) 


ATION) 


AS CA) 


AS MG) 




(00061) 


(00095) 


(00400) 


(00010) 


(00025) 


(00300) 


(00301) 


(00915) 


(00925) 


1130 


7080 


133 


7.7 


18.0 


762 


9.4 


100 


11 


6.5 


1120 


5820 


144 


7.8 


13.5 


763 


10.3 


99 


12 


6.0 


1030 


7340 


150 


8.1 


10.0 


769 


11.1 


97 


13 


6.8 


1330 


33200 


130 


7.9 


11.0 


767 


10.6 


95 


— 


— 


1300 


47400 


100 


7.7 


11.0 


763 


9.5 


86 


9.7 


3.9 


1200 


23700 


139 


7.7 


9.5 


769 


11.4 


99 


13 


5.7 


1100 


8700 


160 


7.9 


12.5 


766 


10.3 


96 


14 


7.0 


1240 


6840 


158 


8.1 


17.5 


764 


10.2 


107 


14 


7.0 


1130 


7350 


132 


8.0 


19.5 


760 


9.4 


103 


11 


5.5 


1250 


8420 


121 


7.9 


18.0 


758 


9.4 


100 


10 


5.5 


1110 


10800 


120 


7.9 


18.0 


766 


9.5 


100 


10 


4.9 


1120 


7870 


127 


8.0 


18.5 


763 


9.4 


100 


12 


5.7 


1130 


6930 


148 


7.9 


18.5 


755 


8.9 


96 


12 


5.7 



140 



SACRAMENTO RTVER BASIN 

1 1389500 SACRAMENTO RIVER AT COLUSA, CA— Continued 

WATER-QUALITY DATA, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 



OCT 

09.. 
NOV 

14. . 
DEC 

04. . 

16. . 
JAN 

04. . 
FEB 

12. . 
MAR 

13.. 
APR 

16. . 
MAY 

20. . 
JUN 

03. . 
JUL 

31.. 
AUG 

18.. 
SEP 

25. . 



DATE 



OCT 

09. . 
NOV 

14. . 
DEC 

04. . 

16. . 
JAN 

04. . 
FEB 

12.. 
HAR 

13.. 
APR 

16. , 
MAY 

20. . 
JUN 

03.. 
JUL 

31., 
AUG 

18.. 
SEP 

25.. 









ALKA- 










SOLIDS, 


SOLIDS, 






POTAS- 


LINITY 




CHLO- 


FLUO- 


SILICA, 


RESIDUE 


SUM OF 


SODIUM, 




SIUM, 


WAT.DIS 


SULFATE 


RIDE, 


RIDE. 


DIS- 


AT 180 


CONSTI- 


DIS- 




DIS- 


GRAN T. 


DIS- 


DIS- 


DIS- 


SOLVED 


DEG. C 


TUENTS, 


SOLVED 




SOLVED 


FIELD 


SOLVED 


SOLVED 


SOLVED 


(MG/L 


DIS- 


DIS- 


(MG/L 


SODIUM 


(MG/L 


CAC03 


(MG/L 


(MG/L 


(MG/L 


AS 


SOLVED 


SOLVED 


AS NA) 


PERCENT 


AS K) 


(MG/L) 


AS S04) 


AS CD 


AS F) 


SI02) 


(MG/L) 


(MG/L) 



(00930) (00932) (00935) (29802) (00945) (00940) (00950) (00955) (70300) (70301) 



5.9 
8.1 
8.7 

4.0 
6.1 
7.4 
7.6 
6.2 
5.7 
5.8 
7.0 
7.6 



SOLIDS, 
DIS- 
SOLVED 
(TONS 
PER 
AC-FT) 



19 
24 
23 

17 
19 
20 
20 
21 
20 
21 
22 
23 



1.0 
1.4 
1.5 

1.1 
1.1 
1.2 
1.3 
1.1 
1.1 
1.1 
1.2 
1.4 



64 

58 

66 
55 

42 

58 
60 
62 
53 
48 
50 
55 
57 



4.3 

5.3 

6.5 
4.8 

4.2 

6.3 

8.3 

7.0 

5.2 

4.6 

3.3 

4.1 

4.8 



NITRO- NITRO- NITRO- NITRO 

GEN, GEN, GEN, GEN, AM 

NITRITE N02+N03 AMMONIA MONIA ♦ MONIA 

DIS- DIS- DIS- ORGANI' 

SOLVED SOLVED SOLVED TOTAL 

(MG/L (MG/L (MG/L (MG/L 

AS N) AS N) AS N) AS N) 



3.1 


<.10 


19 


94 


87 


4.2 


<.10 


21 


93 


98 


4.6 


<.10 


24 


107 


107 


3.4 


<.10 


-- 


92 


-- 


1.9 


<.10 


15 


68 


67 


3.0 


<.10 


20 


96 


94 


4.2 


<.10 


21 


104 


108 


4.0 


<.10 


21 


100 


104 


3.0 


<.10 


20 


101 


87 


2.8 


<.10 


19 


87 


83 


1.9 


<.10 


20 


87 


80 


2.4 


<.10 


21 


95 


88 


3.2 


<.10 


22 


102 


97 


NITRO- 






PHOS- 




3 EN, AM- 




PHOS- 


PHORUS 


ALUM- 


MONIA * 


PHOS- 


PHORUS 


ORTHO, 


INUM, 


3RGANIC 


PHORUS 


DIS- 


DIS- 


DIS- 


DIS. 


TOTAL 


SOLVED 


SOLVED 


SOLVED 


(MG/L 


(MG/L 


(MG/L 


(MG/L 


(UG/L 


AS N) 


AS P) 


AS P) 


AS P) 


AS AL) 



(70303) (00613) (00631) (00608) (00625) (00623) (00665) (00666) (00671) (01106) 



13 


<.010 


.150 


.020 


<.20 


<.20 


13 


<.010 


.160 


<.015 


<.20 


<.20 


15 


<.010 


.180 


.020 


<.20 


<.20 


- 


<.010 


.150 


.030 


<.20 


<.20 


09 


<.010 


.130 


<.015 


.50 


<.20 


13 


.010 


.300 


<.015 


<.20 


<.20 


14 


<.010 


.290 


<.015 


<.20 


<.20 


14 


<.010 


.140 


<.015 


.20 


<.20 


14 


.013 


.084 


<.015 


<.20 


<.20 


12 


<.010 


.094 


<.015 


<.20 


<.20 


12 


<.010 


.078 


.027 


<.20 


<.20 


13 


<.01O 


.084 


<.015 


<.20 


<.20 


14 


<.010 


.115 


<.015 


<.20 


<.20 



070 


.010 


.020 


6.0 


030 


.020 


.020 


5.0 


040 


.010 


.040 


10 


070 


<.010 


.020 


-- 


250 


.020 


.020 


17 


090 


<.010 


.020 


8.0 


010 


<.010 


.020 


7.0 


040 


.010 


<.010 


5.8 


016 


<.010 


.014 


8.1 


045 


.010 


.019 


7.7 


043 


<.010 


.020 


6.3 


032 


<.010 


.013 


6.7 


040 


<.010 


.020 


6.7 



SACRAMENTO RIVER BASIN 

11 389500 SACRAMENTO RIVER AT COLUSA, CA— Continued 

WATER-QUALITY DATA, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 



141 



DATE 



OCT 

09.. 
NOV 

14. . 
DEC 

04. . 

16. . 
JAN 

04.. 
FEB 

12. . 
HAK 

13.. 
APR 

16. . 
MAY 

20. . 
JUN 

03.. 
JUL 

31.. 
AUG 

18.. 
SEP 

25.. 



ANTI- 
MONY, ARSENIC BARIUM, 

DIS- DIS- DIS- 
SOLVED SOLVED SOLVED 
(UG/L (UG/L (UG/L 
AS SB) AS AS) AS BA) 



BERYL- 
LIUM, CADMIUM 
DIS- DIS- 
SOLVED SOLVED 
(UG/L (UG/L 
AS BE) AS CD) 



CHRO- 










MIUM, 


COBALT, 


COPPER, 


IRON, 


LEAD, 


DIS- 


DIS- 


DIS- 


DIS- 


DIS- 


SOLVED 


SOLVED 


SOLVED 


SOLVED 


SOLVED 


(UG/L 


(UG/L 


(UG/L 


(UG/L 


(UG/L 


AS CR) 


AS CO) 


AS CU) 


AS FE) 


AS PB) 



(01095) (01000) (01005) (01010) (01025) (01030) (01035) (01040) (01046) (01049) 



<1.0 1 
<1.0 2 
<1.0 2 



<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 



1 
1 
<1 
2 
1 
1 
1 
1 
2 



19 
20 
20 

17 
22 
23 
21 
17 
16 
15 
17 
20 



<1.0 


<1.0 


<1.0 


<1.0 


1.0 


14 


<1.0 


<1.C 


<1.0 


1.0 


<1.0 


1.0 


14 


<1.0 


<1.0 


<1.0 


1.0 


<1.0 


2.0 


14 


<1.0 


-- 


-- 


-- 


-- 


-- 


-- 


-- 


<1.0 


<1.0 


<1.0 


<1.0 


3.0 


18 


<1.0 


<1.0 


<1.0 


<1.0 


<1.0 


2.0 


10 


<1.0 


<1.0 


<1.0 


2.0 


<1.0 


<1.0 


5.0 


<1.0 


<1.0 


<1.0 


<1.0 


<1.0 


1.8 


9.0 


<1.0 


<1.0 


<1.0 


1.7 


<1.0 


1.6 


3.6 


<1.0 


<1.0 


<1.0 


1.3 


<1.0 


1.1 


7.9 


<1.0 


<1.0 


<1.0 


1.3 


<1.0 


<1.0 


6.4 


<1.0 


<1.0 


<1.0 


<1.0 


<1.0 


2.5 


4.0 


<1.0 


<1.0 


<1.0 


1.1 


<1.0 


1.1 


6.8 


<1.0 



DATE 



OCT 

09.. 
NOV 

14.. 
DEC 

04. . 

16.. 
JAN 

04.. 
FEB 

12.. 
MAR 

13. . 
APR 

16.. 
MAY 

20. . 
JUN 

03. . 
JUL 

31.. 
AUG 

18.. 
SEP 

25. , 



CARBON, 

URANIUM CARBON, ORGANIC 

NATURAL ORGANIC SUS- 

DIS- DIS- PENDED 

SOLVED SOLVED TOTAL 
(UG/L (MG/L (MG/L 

AS U) AS C) AS C) 

(01056) (01060) (01065) (01145) (01075) (01090) (22703) (00681) (00689) 



MANGA- 


MOLYB- 




SELE- 






NESE, 


DENUM, 


NICKEL, 


NIUM, 


SILVER, 


ZINC, 


DIS- 


DIS- 


DIS- 


DIS- 


DIS- 


DIS- 


SOLVED 


SOLVED 


SOLVED 


SOLVED 


SOLVED 


SOLVED 


(UG/L 


(UG/L 


(UG/L 


(UG/L 


(UG/L 


(UG/L 


AS MN) 


AS MO) 


AS NI) 


AS SE) 


AS AG) 


AS ZN) 



6.0 


<1.0 


1.0 


6.0 


<1.0 


<1.0 


4.0 


<1.0 


1.0 


4.0 


<1.0 


1.0 


18 


<1.0 


2.0 


14 


<1.0 


1.0 


10 


<1.0 


<1.0 


3.5 


<1.0 


<1.0 


1.8 


<1.0 


1.4 


2.2 


<1.0 


<1.0 


3.7 


<1.0 


<1.0 


3.3 


<1.0 


<1.0 



<1 
<1 
<1 

<1 
<1 
<1 
<1 
<1 
<1 
<1 
<1 
<1 



<1.0 


1.0 


<1.0 


<1.0 


<1.0 


<1.0 


<1.0 


1.0 


<1.0 


<1.0 


1.0 


<1.0 


<1.0 


1.0 


<1.0 


<1.0 


<1.0 


<1.0 


<1.0 


<1.0 


<1.0 


<1.0 


<1.0 


<1.0 


<1.0 


1.3 


<1.C 


<1.0 


<1.0 


<1.0 


<1.0 


1.5 


<1.0 


<1.0 


<1.0 


<1.0 



1.4 

1.3 

1.1 
1.4 

1.2 

1.4 

1.3 
1.5 

1.1 
1.2 
6.4 



.30 
.20 
.40 

.30 
.50 

.60 
.40 

<.20 
.30 
.40 



142 



SACRAMENTO RIVER BASIN 

1 1389500 SACRAMENTO RIVER AT COLUSA, CA— Continued 

SUSPENDED-SEDIMENT DISCHARGE, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 









DIS- 






SEDI- 








CHARGE, 






MENT, 








INST. 




SEDI- 


DIS- 








CUBIC 


TEMPER- 


MENT, 


CHARGE, 








FEET 


ATURE 


SUS- 


SUS- 


DATE 




TIME 


PER 


WATER 


PENDED 


PENDED 








SECOND 


(DEG C) 


(MG/L) 


(T/DAY) 








(00061) 


(00010) 


(80154) 


(80155) 


OCT 














09.. 


.N 


1130 


7080 


18.0 


36 


688 


NOV 














14.. 


.N 


1120 


5820 


13.5 


46 


723 


DEC 














04.. 


.N 


1030 


7340 


10.0 


27 


535 


16.. 


.N 


1330 


33200 


11.0 


92 


8250 


JAN 














04. . 


.N 


1300 


47400 


11.0 


579 


74100 


FEB 














12. . 


.N 


1200 


23700 


9.5 


105 


6720 


MAR 














13. . 


.N 


1100 


8700 


12.5 


41 


963 


APR 














16. . 


.N 


1240 


6840 


17.5 


47 


868 


MAY 














20.. 


.N 


1130 


7350 


19.5 


36 


714 


JUN 














03.. 


.N 


1250 


8420 


18.0 


37 


841 


JUL 














31.. 


.N 


1110 


10800 


18.0 


33 


962 


AUG 














18.. 


.N 


1120 


7870 


18.5 


28 


595 


SEP 














25.. 


.N 


1130 


6930 


18.5 


29 


543 



SPECinC CONDUCTANCE, US/CM @ 25 DEGREES CELSIUS, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 



MAX 



MIN 



MIN 



MAX 



MIN 





OCTOBER 


NOVEMBER 


1 


155 


149 


153 


151 


2 


161 


155 


156 


153 


3 


166 


161 


157 


156 


4 


171 


166 


158 


156 


5 


176 


171 


157 


156 


6 


179 


176 


158 


156 


7 


180 


166 


158 


155 


8 


166 


148 


156 


155 


9 


148 


133 


156 


155 


10 


133 


128 


157 





11 


130 


128 








12 


138 


129 








13 


146 


138 








14 


152 


146 








15 


155 


151 


— - 


--- 


16 


158 


153 








17 


160 


155 








18 


160 


157 








19 


159 


157 








20 


158 


153 


- — 


- — 


21 


156 


154 








22 


158 


155 








23 


160 


158 








24 


161 


159 








25 


159 


154 


— - 


--- 


26 


154 


151 








27 


152 


150 








28 


152 


151 








29 


153 


151 








30 


152 


148 








31 


151 


148 









131 


129 


130 


127 


131 


128 


131 


130 


132 


130 


131 


130 


132 


130 


132 


131 


131 


130 


130 


127 


128 


124 


126 


122 


130 


126 


130 


129 


131 


109 


109 


97 


116 


108 


116 


109 


109 


102 



JANUARY 


102 


98 


98 


94 


95 


93 


105 


94 


112 


105 


115 


112 


114 


112 


113 


112 


114 


111 


113 


113 


113 


111 


113 


111 


113 


112 


114 


112 


115 


113 


116 


115 


119 


116 


124 


119 


125 


123 


124 


122 


125 


124 


125 


121 


121 


105 


115 


104 


123 


115 


121 


110 


110 


107 


120 


110 


129 


120 


130 


127 


131 


130 



FEBRUARY 


133 


131 


136 


132 


137 


135 


141 


137 


144 


141 


143 


139 


139 


136 


137 


135 


137 


135 


138 


137 



186 


184 


186 


185 


187 


186 


189 


187 


189 


188 



189 


189 


189 


189 


189 


188 


189 


188 


188 


187 


189 


187 


190 


188 


192 


189 


193 


148 


152 


149 



150 



147 


143 


168 


144 


177 


168 


181 


177 


180 


162 


173 


167 


174 


162 


178 


169 


198 


178 


201 


156 


158 


148 


148 


141 



180 



128 



158 



151 



132 



97 



131 



93 



189 



131 



201 



121 



SACRAMENTO RIVER BASIN 

11389500 SACRAMENTO RIVER AT COLUSA, CA— Continued 

SPECmC CONDUCTANCE. US/CM @ 25 DEGREES CELSIUS, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 



143 



HAY 



JULY 



1 
2 
3 
4 
5 

S 

7 

8 

9 

10 

11 
12 
13 
14 
15 

16 
17 
18 
19 

20 

21 
22 
23 
24 
25 

26 
27 
28 
29 
30 
31 



147 
150 
146 
147 
148 

150 
150 
149 
148 
153 



142 
139 
140 
145 

148 
142 
132 
133 



124 


120 


124 


120 


125 


120 



139 





139 


135 


135 


134 


135 


132 


136 


133 


134 


130 


130 


126 


126 


124 


130 


126 


133 


130 


136 


133 


134 


130 


132 


130 


132 


129 


133 


130 


133 


130 


132 


127 


128 


121 


123 


118 


123 


120 


121 


120 


121 


120 


121 


119 


125 


120 


128 


124 



129 


125 


126 


123 


125 


121 


123 


120 


123 


117 


121 


116 


122 


120 


125 


120 


126 


122 


125 


123 


126 


123 


124 


121 


123 


120 


121 


119 


123 


121 


122 


120 


123 


120 


122 


120 


124 


121 


124 


122 


128 


123 


128 


125 


128 


125 


129 


126 


131 


125 


128 


124 


129 


125 


128 


125 


127 


125 


127 


123 



127 


125 


127 


125 


130 


127 


129 


126 


129 


125 


129 


127 


129 


125 


130 


123 


125 


121 


124 


119 


127 


120 


125 


121 


128 


122 


125 


118 


123 


118 


126 


117 


132 


120 


132 


116 


122 


116 


120 


115 


119 


116 


120 


115 


118 


115 


117 


113 


117 


113 


117 


113 


118 


112 


119 


113 


123 


114 


122 


111 


120 


112 



AUGUST 


121 


114 


125 


115 


125 


117 


131 


120 


133 


120 


133 


122 


132 


123 


127 


124 


131 


126 


141 


127 


140 


128 


141 


128 


139 


130 


138 


129 


135 


130 


135 


128 


139 


127 


139 


127 


138 


130 


138 


128 


133 


129 


134 


129 


137 


132 


139 


135 


140 


136 


138 


134 


138 


135 


140 


136 


141 


138 


144 


141 


144 


142 



SEPTEMBER 



145 


140 


142 


136 


139 


134 


140 


135 


139 


137 


139 


136 


141 


138 


142 


139 


143 


140 


147 


142 


148 


145 


150 


145 


150 


148 


153 


149 


153 


150 


150 


145 


146 


144 


146 


143 


144 


142 


146 


140 


146 


141 


156 


143 


166 


147 


180 


155 


155 


129 


142 


130 


137 


124 


124 


116 


131 


121 


139 


129 



MONTH 



153 



120 



118 



131 



116 



132 



111 



144 



180 



116 



144 



SACRAMENTO RIVER BASIN 

1 1389500 SACRAMENTO RIVER AT COLUSA, C A— Continued 

WATER TEMPERATURE, DEGREES CELSIUS, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 



AY 


MAX 


MIN 




OCTOBER 


1 


18.5 


17.5 


2 


18.5 


17.5 


3 


18.5 


17.5 


4 


18.5 


17.5 


5 


18.5 


18.0 


6 
7 
8 
9 
10 


18.5 


18.0 


18.5 


17.5 


11 


18.0 


17.5 


12 


18.0 


17.5 


13 


18.0 


17.5 


14 


18.0 


17.0 


15 


17.5 


17.0 


16 


17.0 


15.5 


17 


15.5 


15.0 


18 


15.5 


14.5 


19 


15.0 


14.0 


20 


14.0 


13.0 


21 


13.5 


13.0 


22 


13.5 


13.0 


23 


14.0 


13.5 


24 


14.5 


13.5 


25 


14 .0 


13.5 


26 


13.5 


12.5 


27 


12.5 


12.0 


28 


12.5 


12.0 


29 


12.5 


12.5 


30 


12.5 


12.0 


31 


13.5 


12.5 



MAX 



NOVEMBER 




14.0 


13 





14.0 


13 


5 


14.0 


14 





14.0 


14 





14.0 


13 





13.0 


12 


5 


13.0 


12 


5 


13.0 


12 


5 


13.5 


13 





14.0 


13 


5 



MAX MIN 
DECEMBER 



MAX 



MIN 



MAX 



MIN 



MIN 



12.0 


12 





12.0 


11 





11.0 


10 


5 


11.0 


10 


5 


11.0 


10 


5 


10.5 


10 


5 


10.5 


10 





10.0 


9 


5 


9.5 


9 


5 


9.5 


9 


5 


9.5 


9 


5 


9.5 


9 


5 


10.0 


9 


5 


10.0 


9 


5 


10.0 


9 


5 


9.5 


9 





10.5 


9 


5 


11.0 


10 


5 


11.5 


11 






JANUARY 


12.5 


11.5 


12.5 


12.5 


12.5 


11.5 


11.5 


10.0 


10.0 


9.0 


9.0 


8.5 


9.0 


8.5 


9.0 


9.0 


9.5 


9.0 


9.5 


9.5 


9.5 


9.5 


9.5 


9.5 


9.5 


8.0 


8.0 


8.0 


8.5 


8.0 


9.0 


8.5 


9.5 


9.0 


9.5 


9.5 


9.5 


9.5 


9.5 


9.5 


9.5 


9.5 


9.5 


9.0 


9.0 


8.0 


8.5 


8.0 


9.0 


8.5 


9.5 


8.5 


10.0 


9.5 


10.0 


10.0 


10.0 


10.0 


10.0 


9.5 


9.5 


9.5 



FEBRUARY 


10.0 


9.5 


10.0 


9.5 


9.5 


9.0 


9.5 


9.0 


9.5 


9.0 


9.5 


9.0 


9.0 


9.0 


9.0 


9.0 


9.5 


9.0 


9.5 


9.0 



11.5 
11.5 
12.0 
12.5 
12.0 



11.0 
11.0 



11, 
11, 
11, 



11 


5 


11 





12 





11 





12 





11 


5 


12 





11 


5 


12 





11 





12 





11 


5 


12 


5 


11 


5 


13 





12 





13 


5 


12 


5 


14 





13 






13 


5 


13 





13 


5 


13 


5 


15 





13 


5 


15 


5 


14 


5 


15 


5 


15 





16 


5 


15 





16 


5 


15 


5 


16 


5 


15 


5 


16 


5 


16 





16 





15 






12.0 



14.0 



12.5 



12.0 



9.0 



12.5 



8.0 



12.5 



9.0 



16.5 



11.0 



MIN 



APRIL 



1 








2 


13.0 


12.0 


3 


13.0 


12.0 


4 


14.0 


13.0 


5 


13.5 


12.5 


6 


14.0 


13.0 


7 


14.5 


13.5 


8 


15.0 


14.0 


9 


14.5 


13.5 


10 








11 








12 








13 








14 








15 








16 








17 








18 








19 








20 








21 








22 








23 








24 








25 








26 








27 








28 








29 








30 








31 









19 


5 


18 





20 





18 


5 


20 


5 


19 





20 


5 


19 





20 


5 


19 


5 


20 





19 





20 





19 





20 


5 


19 





21 





19 


5 


21 





19 


5 


20 


5 


19 


5 


21 





19 


5 


20 


5 


19 


5 


20 


5 


19 





19 


5 


18 


5 


18 


5 


17 


5 


18 





16 


5 


17 


5 


17 





17 





17 





18 





17 





18 





17 


5 


18 





17 





19 





17 


5 


19 


5 


18 


5 



20 





18 


5 


19 


5 


19 





19 





17 





18 





16 


5 


18 





17 





18 





17 





19 


5 


18 





19 


5 


19 





20 





18 


5 


19 


5 


18 


5 


19 





18 


5 


18 


5 


18 





18 





17 


5 


18 


5 


17 


5 


19 





18 





19 





16 





19 





18 





19 





18 





19 





18 





19 





18 





18 


5 


17 


5 


18 


5 


17 


5 


18 


5 


17 


5 


18 





17 





18 


5 


17 





18 


5 


17 


5 


18 


5 


17 


5 


18 





17 





17 


5 


16 


5 


17 


5 


16 


5 



17.5 


16.5 


18.0 


16.5 


18.5 


17.0 


19.0 


17.5 


19.0 


18.0 


19.0 


18.0 


19.0 


18.0 


19.5 


18.5 


19.5 


18.5 


19.5 


18.5 


19.5 


18.0 


18.5 


17.5 


19.0 


17.5 


19.0 


17.5 


19.0 


18.0 


19.0 


18.0 


18.5 


17.5 


19.0 


17.5 


19.0 


18.0 


19.5 


18.0 


19.5 


18.5 


19.5 


18.5 


19.5 


18.0 


19.0 


17.5 


19.0 


17.5 


19.0 


18.0 


19.0 


18.0 


19.0 


18.0 


19.0 


18.5 


19.0 


18.5 


19.0 


18.0 





AUGUST 




19 





18 





18 


5 


18 





18 


5 


17 


5 


18 


5 


18 





19 





18 





19 





18 





19 





18 





19 





18 





19 





18 


5 


18 


5 


18 





18 


5 


18 





18 


5 


18 


5 


19 





18 


5 


19 


5 


18 


5 


19 


5 


19 





19 


5 


19 





19 


5 


18 


5 


19 


5 


18 


5 


19 


5 


18 


5 


19 


5 


18 


5 


19 


5 


18 


5 


19 


5 


18 


5 


19 


5 


19 





20 





18 


5 


20 





19 





20 





19 





20 





19 





20 





19 





20 





19 





20 





19 





20 





19 






SEPTEMBER 



20 





19 





19 


5 


18 


5 


19 


5 


18 


5 


19 


5 


19 





20 





19 





19 





18 


5 


18 


5 


18 





18 


5 


18 





18 





18 





18 


5 


17 


5 


18 


5 


17 


5 


19 





18 





19 





18 





19 





18 





18 





17 


5 


18 





17 





17 





16 


5 


17 





16 





17 





16 





17 


5 


16 





18 





17 





18 


5 


17 


5 


19 





18 





19 





18 





19 


5 


18 


5 


19 





18 


5 


19 





18 





18 





17 





18 


5 


17 


5 


18 


5 


17 


5 



21.0 



16.5 



20.0 



16.5 



19.5 



16.5 



20.0 



17.5 



20.0 



SACRAMENTO RIVER BASIN 



145 



1 1389720 BUTTE CREEK BELOW DIVERSION DAM, NEAR STIRLING CITY, CA 

LOCATION.--Lat 39°58'53", long 12r35' 15", unsurveyed, T.25 N., R.3 E., Butte County, Hydrologic Unit 18020120, on left bank 400 ft 
downstream from diversion dam, 0.1 mi upstream from Haw Creek, and 6.2 mi northwest of Stirling City. 

DRAINAGE AREA.--61.3 mil 

PERIOD OF RECORD.-January to February 1986, June 1986 to current year (low-flow records only). 

GAGE. --Water-stage recorder. Elevation of gage is 2,840 fl above sea level, from topographic map. 

REMARKS. -No records computed above 40 ft'/s. Flow regulated by diversion dam 400 ft upstream. Most of the water is diverted at diversion dam 

to Butte Creek Canal and then to De Sabla Powerplant (station 1 1389750). 
COOPERATION. -Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection 

with a Federal Energy Regulatory Commission project. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



OCT 



1 


19 


2 


19 


3 


19 


4 


19 


5 


19 


6 


19 


7 


19 


8 


19 


9 


24 


10 


19 


11 


19 


12 


19 


13 


19 


14 


19 


15 


19 


16 


19 


17 


19 


18 


19 


19 


19 


20 


19 


21 


19 


22 


19 


23 


19 


24 


19 


25 


19 


26 


19 


27 





28 


24 


29 


24 


30 


22 


31 


21 


TOTAL 





MEAN 





MAX 





MIN 





AC -FT 





e 


Estimated 



NOV 

21 
21 
20 
20 
20 

20 
20 
20 
20 
20 

20 
19 
19 
19 
19 

19 
34 



JAN 



MAR 



JUN 



JUL 



22 

20 
20 
20 
21 



29 
24 






e27 


el9 


18 





e27 


el9 


19 


— 


e22 


el9 


20 





e21 


el9 


20 


— 


e20 


e20 


19 





e20 


e20 


20 





e33 


e20 


20 





e2C 


el9 


20 


— 


e20 


el9 


19 


--- 


e21 


el9 


19 


— 


e27 


el9 


19 





e33 


el 9 


19 





e33 


el9 


19 





e33 


el9 


20 


— 


e27 


18 


33 


— 


e20 


18 


19 


— 


e20 


18 


19 





e20 


18 


20 





e20 


18 


19 


— 


e20 


20 


19 





el9 


19 


19 


— 


el9 


19 


19 





e20 


19 


19 





el9 


19 


19 


el6 


el8 


19 


19 


e24 


e20 


19 


19 


e21 


e20 


19 


19 


e27 


el9 


19 


19 


e22 


el9 


19 


19 


e24 


el9 


19 


19 


— - 


el9 


19 








695 


588 


590 





22.4 


19.0 


19.7 





33 


20 


33 





18 


18 


18 





1380 


1170 


1170 



146 



SACRAMENTO RIVER BASIN 
1 1389740 BUTTE CREEK BELOW FORKS OF BUTTE DIVERSION DAM, NEAR DE SABLA, CA 



LOCATION.--Lat 39''54'05', long 121°37'24", in NW 1/4 NE 1/4 sec.34, T.24 N., R.3 E., Butte County, Hydrologic Unit 18020120, on left bank 
30 ft downstream from diversion dam, 0.2 mi upstream firom American Ravine, and 2.0 mi north of De Sabla. 

DRAINAGE AREA.--96.4 mi^. 

PERIOD OF RECORD.-April 1992 to current year flow-flow records only). 

GAGE.--Water-stage recorder and concrete control. Elevation of gage is 1,900 ft above sea level, from topographic map. 

REMARKS. --No records computed above 60 ft'/s. No record Dec. 3 1 to Mar. 6 due to flood damage. Flow regulated by Forks of Butte Diversion 
Dam 30 ft upstream. Water is diverted out of creek to Butte Canal 7.4 mi upstream by Pacific Gas and Electric Co. Water is diverted 30 ft 
upstream to Forks of Butte Powerplant (station 1 1389747). 

COOPERATION— Records were collected by Energy Growth Partnership I, under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. 



DAY 



OCT 



DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 

NOV DEC JAN FEB MAR APR MAY JUN JUL 



1 


33 


38 


49 


2 


33 


36 


51 


3 


33 


36 


48 


4 


33 


36 


53 


5 


33 


35 





6 


33 


35 





7 


32 


35 


48 


8 


32 


34 





9 


38 


34 





10 


33 


34 





11 


33 


34 





12 


33 


34 





13 


33 


34 





14 


33 


34 





IS 


32 


34 





16 


32 


35 





17 


32 


51 





18 


35 


48 


48 


19 


37 





47 


20 


34 





48 


21 


33 


48 


47 


22 


33 





51 


23 


33 


58 


47 


24 


33 


47 


47 


25 


36 


49 


47 


26 


34 


54 





27 


36 


45 





28 


37 


43 





29 


50 


42 





30 


46 


41 





31 


39 





— 


TOTAL 


1077 








MEAN 


34.7 








MAX 


50 








MIN 


32 








AC -FT 


2140 








a 


8 


2260 


11450 



AUG 



SEP 



— 


48 


47 


47 


53 


34 


35 


— 


48 


48 


47 


42 


34 


35 


— 


48 


48 


48 


39 


34 


35 


— 


48 


48 


48 


42 


34 


35 




48 


48 


47 


41 


34 


35 





48 


47 


48 


41 


34 


35 


... 


48 


48 


47 


40 


34 


35 


... 





47 


47 


40 


34 


35 


59 


48 


53 


48 


39 


34 


35 


59 


48 


47 


48 


42 


34 


35 


59 


48 


48 


47 


50 


34 


35 


48 


48 


47 


47 


49 


35 


35 


47 


48 


48 


47 


49 


34 


35 


47 


48 


47 


47 


49 


34 


35 


47 


48 


47 


47 


48 


34 


33 





48 


47 


47 


43 


34 


30 




48 


47 


47 


39 


34 


29 


... 





48 


47 


39 


34 


31 


51 





47 


47 


39 


35 


30 


48 





47 


47 


38 


35 


29 


48 





47 


47 


38 


35 


29 


48 





47 


47 


35 


35 


29 


48 





48 


47 


35 


35 


28 


48 


58 


47 


48 


35 


35 


28 


48 


47 


47 


41 


35 


35 


27 


48 


48 


47 


36 


35 


35 


27 


48 


48 


47 


35 


35 


35 


27 




48 


47 


37 


35 


35 


27 


48 


47 


47 


42 


35 


35 


27 


48 


48 


47 


48 


35 


35 


27 


48 


- — 


47 


... 


35 


35 


--- 








1472 


1373 


1250 


1068 


948 


— 





47.5 


45.8 


40.3 


34.5 


31.6 


... 





53 


48 


53 


35 


35 







47 


35 


35 


34 


27 


— 





2920 


2720 


2480 


2120 


1880 


60 


11430 


7640 


3690 


4 









a Diversion, in acre-feet, to Forks of Butte Powerplant, provided by Energy Growth Partnership 1. 



SACRAMENTO RIVER BASIN 
1 1389780 BUTTE CREEK BELOW CENTERVILLE DIVERSION DAM, NEAR PARADISE, CA 



147 



LOCATION.--Ut 39°52'01", long 121''37'58", in SW 1/4 NW 1/4 sec.lO, T.23 N., R,3 E., Butte County, Hydrologic Unit 18020120, on left bank 
400 ft downstream from Centerville diversion dam, 0.2 mi downstream from De Sabia Powerplant, and 6.8 mi north of Paradise. 

DRAINAGE AREA.--101 mi^. 

PERIOD OF RECORD.-November 1985 to February 1986, June 1986 to current year (low-flow records only). 

GAGE. --Water-stage recorder. Elevation of gage is 1,130 ft above sea level, from topographic map. 

REMARKS. -No records computed above 60 ft'/s. Flow regulated by several reservoirs and diversions upstream. Most of the water is diverted at 
Centerville Diversion Dam to the Centerville Powerplant (station 1 1389775). 

COOPERATION. -Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



DAY 



OCT 



NOV 



1 


48 


2 


48 


3 


48 


4 


48 


5 


48 


6 


48 


7 


48 


8 


48 


9 


47 


10 





11 


_-- 


12 





13 





14 





15 





16 





17 





18 





19 





20 





21 





22 





23 





24 





25 





26 





27 





28 





29 





30 





31 





TOTAL 





MEAN 





MAX 





MIN 





AC- FT 






DEC 



52 



JAN 



FEB 



MAR 



APR 



MAY 



JtIN 



JUL 



48 
44 
46 



3560 



4130 



5930 



CAL YR 1996 a 82180 
WTR YR 1997 a 41460 



.- 





50 


49 


_. 





49 


49 


_. 





51 


49 


_- 





53 


48 


-- 


— - 


49 


46 








52 


50 


-- 





51 


55 


-- 





47 


52 


— 





48 


47 


59 


- — 


50 


47 


56 


57 


48 


47 


57 


48 


47 


47 


58 


50 


47 


48 


56 


48 


46 


47 


56 


48 


46 


47 


58 


47 


51 


47 


53 


50 


51 


47 


51 


49 


50 


47 


48 


48 


50 


47 


48 


48 


51 


59 


45 


48 


50 


48 


43 


48 


49 


48 


56 


49 


50 


48 


56 


48 


51 


48 


45 


47 


52 





42 


47 


49 





43 


47 


47 





... 


47 


47 







48 


49 





— 


49 


50 
48 





... 


... 


1529 


... 


— 





49.3 
53 


... 


... 





46 
3030 


::: 


100 


5170 


6320 


5770 



1610 



a Diversion, in acre-feet, to Centerville Powerplant, provided by Pacific Gas &. Electric Co. 



148 



SACRAMENTO RIVER BASIN 
11389800 TOADTOWN CANAL ABOVE BUTTE CANAL. NEAR STIRLING CITY, CA 



LOCATION -Lat 39°53'09 ", long 121°36'35", in NE 1/4 NW 1/4 sec.2, T.23 N., R.3 E., Bune County, Hydrologic Unit 18020120, on right bank 
600 ft upstream from Butte Canal and 4.6 mi west of Stirling City. 

PERIOD OF RECORD.-October 1986 to current year. Monthly discharges for water years 1931-86 are published as a line item to Butte Creek near 

Chico {station 11390000). 

GAGE. -Water-stage recorder and Parshall flume. Elevation of gage is 2,790 ft above sea level, from topographic map. 

REMARKS— Canal diverts from right bank of West Branch Feather River, in sec. 16, T.24 N., R.4E. at Hendricks Diversion Dam to Hendricks 
Canal, flows through tunnel down Long Ravine to Toadtown Canal, and discharges into Butte Canal. Butte Canal flows to De Sabla Powerplant 
(station 11389750) on Butte Creek. 

COOPERATION— Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD.-Maximum daily discharge, 127 t?/s, Feb. 12, May 20, 1995, no flow at times in most years. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



OCT 



NOV 



DEC 



JAN 



FEB 



MAR 



APR 



MAY 



Jt»I 



JUL 



1 


67 


37 


92 


51 




15 


10 


5.3 


3.6 


2. 





64 


77 


36 


2 


67 


37 


79 


22 




14 


12 


5.3 


3.6 


1. 


8 


62 


76 


35 


3 


71 


36 


68 


17 




14 


10 


4.1 


3.4 


2. 


1 


58 


71 


32 


4 


71 


35 


75 


13 




15 


10 


1.7 


3.3 


4. 


7 


56 


70 


33 


5 


70 


35 


108 


9. 


9 


15 


9.7 


.24 


3.2 


3. 


2 


55 


71 


33 


6 


69 


34 


94 


8. 


2 


14 


9.4 


.23 


1.8 


29 




54 


94 


32 


7 


69 


33 


85 


11 




13 


9.0 


.17 


1.2 


7 . 


6 


54 


104 


31 


8 


71 


33 


91 


12 




13 


6.5 


.18 


2.6 


11 




59 


90 


32 


9 


70 


33 


104 


11 




12 


3.4 


.43 


1.7 


58 




59 


79 


31 


10 


48 


33 


93 


9. 


9 


13 


2.5 


.87 


.72 


67 




59 


77 


31 


11 


31 


33 


72 


8. 


9 


13 


2.5 


.32 


.82 


67 




59 


77 


32 


12 


32 


33 


93 


8. 


1 


13 


2.4 


.32 


.17 


67 




58 


77 


32 


13 


32 


33 


105 


11 




12 


2.5 


.32 


.13 


67 




57 


76 


31 


14 


31 


33 


103 


14 




12 


2.7 


.26 


.11 


65 




55 


76 


32 


15 


31 


33 


102 


14 




12 


2.7 


.28 


.11 


63 




54 


75 


43 


16 


31 


33 


107 


13 




12 


4.5 


.24 


.11 


60 




57 


75 


34 


17 


31 


63 


112 


13 




11 


4.3 


.24 


.11 


58 




57 


75 


32 


18 


37 


76 


98 


12 




11 


3.1 


.74 


.11 


57 




59 


75 


34 


19 


39 


72 


115 


12 




12 


2.6 


5.1 


.11 


55 




64 


74 


32 


20 


34 


68 


106 


13 




13 


2.5 


5.4 


.11 


54 




61 


85 


31 


21 


33 


74 


89 


15 




12 


2.2 


5.7 


.08 


53 




60 


78 


30 


22 


32 


92 


90 


19 




12 


2.5 


4.7 


.06 


53 




64 


76 


30 


23 


33 


93 


97 


14 




11 


2.5 


5.0 


.06 


52 




63 


75 


30 


24 


36 


94 


109 


11 




11 


4.7 


4.4 


.13 


51 




63 


74 


29 


25 


41 


89 


114 


16 




11 


4.5 


4.1 


.11 


50 




57 


52 


29 


26 


36 


79 


106 


23 




11 


2.8 


3.9 


.11 


49 




49 


33 


29 


27 


34 


70 


95 


19 




11 


5.5 


4.0 


.11 


47 




60 


33 


29 


28 


34 


66 


91 


18 




11 


4.0 


4.0 


.11 


49 




77 


37 


28 


29 


47 


61 


55 


15 







.63 


3.9 


.11 


58 




75 


37 


29 


30 


46 


58 


68 


15 







.66 


3.9 


.11 


63 




73 


37 


29 


31 


39 





29 


16 







2.9 





1.5 


-- 


■- 


73 


36 





TOTAL 


1413 


1599 


2845 


465, 


.0 


349 


145.19 


75.34 


29.50 


1324, 


,4 


1875 


2142 


951 


MEAN 


45.6 


53.3 


91.8 


15. 


,0 


12.5 


4.68 


2.51 


.95 


44. 


1 


60.5 


69.1 


31.7 


MAX 


71 


94 


115 


51 


15 


12 


5.7 


3.6 


67 


77 


104 


43 


MIN 


31 


33 


29 


8. 


1 


11 


.63 


.17 


.06 


1. 


8 


49 


33 


28 


AC -FT 


2800 


3170 


5640 


922 


692 


288 


149 


59 


2630 


3720 


4250 


1890 


a 


5560 


6180 


8720 


434 


392 


77 








3020 


6810 


6770 


4030 


a Disi 


charge, in acre-feet at 


De Sabla Po 


wreplant, pr 


ovided bv 


■ Pacific Gas & Electric Co. 















SACRAMENTO RIVER BASIN 
1 1389800 TOADTOWN CANAL ABOVE BUTTE CANAL, NEAR STIRLING CITY, CA— Continued 

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1987 - 1997, BY WATER YEAR (WY) 

OCT NOV DEC JAN FEB MAR APR MAY JUN JUL 



AUG 



149 



MEAN 


30.4 


34.2 


49.4 


61.4 


75.1 


95.6 


104 


97.4 


75.7 


63.1 


46.6 


24.8 


MAX 


57.8 


53.3 


91.8 


95.8 


118 


117 


119 


118 


119 


114 


99.7 


71.8 


(WY) 


1987 


1997 


1997 


1996 


1995 


1993 


1992 


1993 


1995 


1995 


1995 


1996 


MIN 


7.72 


17.1 


18.9 


15.0 


12.5 


4.68 


2.51 


.95 


39.2 


41.3 


12.0 


2.24 


(WY) 


1989 


1992 


1991 


1997 


1997 


1997 


1997 


1997 


1987 


1996 


1991 


1992 



SUMMARY STATISTICS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1987 - 1997 



ANNUAL TOTAL 


29899. 


52 






13213, 


,43 






ANNUAL MEAN 


81. 


7 






36. 


2 






HIGHEST ANNUAL MEAN 


















LOWEST ANNUAL MEAN 


















HIGHEST DAILY MEAN 


122 




Feb 


10 


115 




Dec 


19 


LOWEST DAILY MEAN 




17 


Aug 


7 




.06 


May 


22 


ANNUAL SEVEN-DAY MINIMUM 




,22 


Aug 


3 




09 


May 


17 


ANNUAL RUNOFF (AC -FT) 


59310 








26210 








ANNUAL DISCHARGE (AC-FT) a 


93710 








41990 








10 PERCENT EXCEEDS 


119 








77 








50 PERCENT EXCEEDS 


92 








32 








90 PERCENT EXCEEDS 


31 










,85 







63 


,1 








83, 


,8 






1993 


36, 


,2 






1997 


127 




Feb 


12 


1995 




.00 


Sep 


9 


1987 




.00 


Sep 


9 


1987 


;700 










116 










58 










10 











a Discharge, in acre-feet at De Sabia Powreplant, provided by Pacific Gas & Electric Co. 



150 



SACRAMENTO RIVER BASIN 
1 1390000 BUTTE CREEK NEAR CHICO, CA 



LOCATION.--Ut 39°43'34', long 12 1°42'28 ", in NW 1/4 NW 1/4 sec.36, T.22 N., R.2 E., Butte County, Hydrologic Unit 18020105, on right bank 
0.7 mi downstream from Little Butte Creek and 7.5 mi east of Chico. 

DRAINAGE AREA.-- 147 mil 

PERIOD OF RECORD.-October 1930 to current year. Monthly discharge only for some periods, published in WSP 1315-A. 
CHEMICAL DATA: Water years 1953-79. 
WATER TEMPERATURE: Water years 1962-79. 

REVISED RECORDS.-WSP 1445: 1953(M). WSP 1931: Drainage area. 

GAGE.-Water-stage recorder and crest-stage gage. Elevation of gage is 320 ft above sea level, from topographic map. Prior to Aug. 13, 1944, 
water-stage recorder at site 0.4 mi upstream at different datum. Aug. 13, 1944, to June 5, 1986, at datum 3.00 ft higher. 

REMARKS. -Records good. Flow shghtly regulated by storage in Magalia Reservoir, usable capacity, 2,640 acre-ft, and since 1957 by Paradise 
Reservoir, usable capacity, 1 1 ,500 acre-ft. Diversions upstream from station for irrigation and domestic use of about 7,000 acre-ft annually. 
Butte Creek receives water above station from West Branch Feather River by way of Toadtown Canal (1 1389800). 

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 35,600 ft'/s, Jan 1, 1997, gage height, 15.06 ft, in gage well, 15.7 ft from 
floodmarks, on basis of slope-area measurement of peak flow; maximum gage height, 17.52 ft, Feb. 17, 1986, present datum; minimum 
discharge, 10 ft^/s, Nov. 29, 1952. 

EXTREMES FOR CURRENT YEAR.-Peak discharges greater than base discharge of 2,700 ft'/s, or maximum: 

Discharge Gage height Discharge Gage height 

Date Time (ftVs) (ft) Date Time (ft^/s) (ft) 



Dec. 10 
Jan. 1 



0800 
0845 



5,270 
35,600 



6.78 
15.06 



Jan. 26 



0330 



5,860 



5.25 



OCT 



DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 

NOV DEC JAN FEB MAR APR MAY JUN JUL 



SEP 



1 


154 


133 


246 


e26600 


1350 


342 


288 


279 


175 


181 


157 


123 


2 


154 


129 


236 


ell200 


1190 


445 


282 


268 


175 


175 


154 


123 


3 


157 


127 


210 


65040 


1060 


6405 


279 


260 


175 


169 


154 


124 


i 


157 


126 


209 


e3420 


971 


6357 


276 


252 


200 


169 


153 


121 


5 


155 


124 


1060 


e2410 


880 


346 


272 


243 


183 


162 


150 


122 


6 


152 


121 


526 


el790 


801 


328 


269 


238 


173 


155 


155 


121 


7 


151 


119 


399 


el440 


752 


324 


268 


230 


170 


158 


164 


120 


8 


153 


119 


550 


1230 


719 


310 


263 


225 


168 


158 


163 


120 


9 


151 


119 


1360 


1060 


681 


300 


268 


218 


193 


158 


155 


120 


10 


135 


120 


3630 


928 


653 


291 


263 


214 


204 


162 


153 


120 


11 


107 


119 


1730 


842 


628 


292 


260 


208 


195 


160 


151 


120 


12 


108 


117 


1550 


782 


607 


286 


258 


202 


194 


158 


154 


120 


13 


109 


117 


1460 


713 


580 


283 


257 


201 


195 


158 


155 


120 


14 


109 


118 


1010 


656 


559 


281 


259 


201 


193 


157 


154 


122 


15 


107 


119 


747 


629 


549 


280 


257 


197 


193 


154 


154 


136 


16 


107 


123 


611 


e600 


537 


312 


256 


196 


186 


155 


152 


124 


17 


108 


216 


538 


e560 


564 


383 


255 


191 


183 


157 


150 


121 


18 


119 


365 


465 


e540 


540 


340 


264 


191 


179 


152 


150 


126 


19 


147 


505 


447 


e530 


512 


320 


379 


191 


173 


152 


148 


123 


20 


121 


550 


420 


6570 


501 


311 


329 


188 


172 


154 


164 


120 


21 


116 


297 


430 


839 


6490 


309 


350 


188 


172 


154 


161 


119 


22 


114 


496 


504 


2530 


6460 


309 


331 


186 


172 


154 


152 


118 


23 


117 


482 


476 


2260 


6430 


308 


331 


196 


171 


154 


150 


118 


24 


121 


309 


445 


1380 


6380 


304 


314 


203 


169 


154 


150 


117 


25 


144 


265 


423 


3520 


370 


301 


299 


192 


167 


154 


142 


116 


26 


131 


240 


1050 


4950 


368 


299 


290 


188 


161 


158 


127 


119 


27 


122 


215 


2280 


3230 


366 


300 


286 


184 


161 


160 


127 


119 


28 


119 


202 


2250 


2640 


356 


292 


284 


179 


158 


158 


127 


116 


29 


185 


192 


3870 


2140 





297 


282 


180 


165 


158 


130 


116 


30 


201 


184 


8120 


1740 





290 


279 


179 


171 


160 


130 


113 


31 


149 





el8800 


1500 





299 


... 


177 


... 


158 


125 


... 


TOTAL 


4180 


6468 


56072 


88269 


17854 


9844 


8548 


6445 


5346 


4926 


4611 


3617 


MEAN 


135 


216 


1809 


2847 


638 


318 


285 


208 


178 


159 


149 


121 


MAX 


201 


550 


18800 


26600 


1350 


445 


379 


279 


204 


181 


164 


136 


MIN 


107 


117 


209 


530 


356 


280 


255 


177 


158 


152 


125 


113 


AC -FT 


8290 


12830 


111200 


175100 


35410 


19530 


16950 


12780 


10600 


9770 


9150 


7170 


e Estimated. 

























SACRAMENTO RIVER BASIN 



151 



1 1390000 BUTTE CREEK NEAR CHICO, CA— Continued 

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1931 - 1997, BY WATER YEAR (WY) 

OCT NOV DEC JAN FEB MAR APR MAY JXTO 



MEAN 


138 


224 


463 


691 


788 


761 


679 


498 


280 


163 


131 


118 


MAX 


775 


1269 


2061 


2847 


2925 


2601 


1848 


1314 


667 


321 


223 


175 


(WY) 


1963 


1974 


1956 


1997 


1986 


1995 


1982 


1995 


1983 


1983 


1975 


1967 


MIN 


65.8 


77.8 


89.5 


91.0 


114 


123 


114 


134 


79.4 


54.4 


46.1 


51.9 


(WY) 


1992 


1992 


1991 


1991 


1977 


1977 


1977 


1977 


1977 


1977 


1931 


1992 



SUMMARY STATISTICS 

ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC -FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1931 



223566 






216180 










611 






592 






409 
834 

94.0 


1995 

1977 


18800 


Dec 


31 


26600 


Jim 




26600 


Jan 1 1997 


92 


Aug 


9 


107 


Oct 


11 


44 


Aug 23 1931 


95 


Aug 


4 


108 


Oct 


11 


44 


Aug 23 1931 








35600 


Jan 




35600 


Jan 1 1997 








15.06 


Jan 




17.52 


Feb 17 1986 


443400 






428800 






296300 




1090 






945 






842 




340 






196 






206 




112 






120 






100 





152 



SACRAMENTO RIVER BASIN 
1 1390500 SACRAMENTO RIVER BELOW WILKINS SLOUGH, NEAR GRIMES, CA 



LOCATION.--Ut 39°00'36", long 121°49'25", in NW 1/4 NE 1/4 sec.2, T.13 N., R.l E., Colusa County, Hydrologic Unit 18020104, on right bank 
1,200 ft downstream from Wilkins Slough, 5.8 mi southeast of Grimes, and at mile 62.9 upstream from Sacramento. 

DRAINAGE AREA.-- 12,926 mi^, 

WATER -DISCHARGE RECORDS 

PERIOD OF RECORD.-August 1931 to current year (prior to October 1938, low-water periods only). Monthly discharge only for some periods, 
published in WSP 1315-A. Prior to October 1965, published as "below Wilkins Slough." 

GAGE— Water-stage recorder and crest-stage gage. Datum of gage is 3.00 ft below sea level. 

REMARKS— Records good. Natural flow of stream affected by storage reservoirs, power development, bypassing for flood control, diversions for 
irrigation, and return flow from irrigated areas When discharge exceeds about 23,000 ft^/s, flow begins over Tisdale Weir, 1.0 mi upstream 
on left bank, into Sutter Bypass. Records tabulated below do not include flow over Tisdale Weir. See schematic diagram of lower Sacramento 
River basin. 

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge (water years 1939-97), 32,700 ft^/s, Feb. 20, 1986, gage height, 52.50 ft; 
maximum gage height, 52.75 ft, Mar. 1, 1940; minimum daily, 645 ft^/s, Aug. 9, 1939. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



DAY 



OCT 



NOV 



DEC 



JAN 



FEB 



APR 



MAY 



JUN 



JUL 



1 


7650 


5830 


6770 


28200 


26500 


10400 


8250 


5360 


6290 


9680 


9090 


7030 


2 


7570 


5650 


6670 


629400 


26200 


10300 


8130 


5100 


6420 


9930 


9030 


7320 


3 


7410 


5500 


6710 


630000 


25700 


10200 


7830 


5390 


6610 


10000 


9020 


7990 


4 


7300 


5450 


6660 


631000 


25100 


10400 


7610 


5460 


6950 


10100 


9000 


8380 


5 


7230 


5390 


6700 


29500 


24700 


10000 


7680 


5130 


7410 


9820 


9240 


8690 


6 


6990 


5350 


9680 


28600 


24600 


9550 


7270 


4990 


7990 


9700 


9340 


8870 


7 


6910 


5370 


13400 


28400 


24600 


9330 


6930 


4950 


7810 


9570 


9230 


9020 


8 


6850 


5370 


11600 


28000 


24400 


9100 


6740 


5060 


7770 


9380 


9070 


9200 


9 


6640 


5360 


14700 


27500 


24300 


8840 


6610 


5220 


7680 


9140 


8650 


9240 


10 


6470 


5310 


21200 


27200 


23900 


8660 


6540 


5420 


7740 


9270 


8500 


8550 


11 


6190 


5500 


25600 


26900 


23200 


8450 


6360 


5580 


7630 


9530 


8480 


7990 


12 


5810 


5520 


26100 


26800 


22500 


8330 


6140 


5870 


7850 


9390 


8440 


7870 


13 


5440 


5440 


26100 


26700 


21700 


8150 


5950 


6400 


8330 


9480 


8360 


7560 


14 


5120 


5270 


26000 


26700 


20200 


7970 


5740 


6640 


9040 


9500 


8030 


7340 


15 


4880 


5240 


25600 


26600 


18100 


7760 


5710 


6440 


9480 


9670 


7840 


7420 


16 


4730 


5290 


25100 


26600 


16700 


7710 


5780 


6120 


9930 


9650 


7900 


7990 


17 


4500 


5420 


24500 


26500 


15500 


8540 


5610 


5630 


10200 


9570 


7460 


8400 


18 


4430 


5640 


23600 


26100 


14700 


11600 


5140 


5960 


10100 


9720 


6920 


8300 


19 


4480 


5960 


22800 


25700 


14400 


12700 


5050 


5900 


10000 


9650 


6590 


7940 


20 


4600 


6870 


21900 


25500 


13400 


10900 


5720 


5550 


9910 


9500 


6830 


7740 


21 


4650 


8610 


21300 


25100 


12800 


10100 


6940 


5280 


9710 


9660 


7080 


7410 


22 


4570 


9010 


20900 


25000 


12200 


9890 


7120 


5260 


9240 


9800 


7470 


7160 


23 


4520 


9230 


21300 


26200 


11800 


9860 


7120 


5690 


9180 


9770 


7300 


7010 


24 


4540 


11400 


22000 


27200 


11500 


9810 


6870 


6540 


9320 


9980 


7040 


6910 


25 


4630 


9400 


20800 


27000 


11400 


9500 


7080 


7350 


9300 


9900 


7010 


6760 


26 


4710 


8060 


18500 


27500 


11200 


9250 


5740 


7680 


9290 


9550 


7080 


6670 


27 


4780 


7400 


18800 


28100 


10900 


8960 


4940 


7880 


9140 


9480 


7140 


6630 


28 


4890 


7110 


24600 


27700 


10600 


8710 


4910 


7810 


9140 


9350 


6950 


6560 


29 


5030 


7040 


25100 


27100 





8670 


4910 


7660 


9390 


8990 


6800 


6530 


30 


5350 


6880 


25800 


26900 





8380 


5040 


7250 


9560 


8990 


6590 


6460 


31 


5780 


--- 


27100 


26800 


--- 


8270 





6660 





8950 


6730 





TOTAL 


174650 


194870 


597590 


846500 


522800 


290290 


191460 


187230 


258410 


296670 


244210 


230940 


MEAN 


5634 


6496 


19280 


27310 


18670 


9364 


6382 


6040 


8614 


9570 


7878 


7698 


MAX 


7650 


11400 


27100 


31000 


26500 


12700 


8250 


7880 


10200 


10100 


9340 


9240 


MIN 


4430 


5240 


6660 


25000 


10600 


7710 


4910 


4950 


6290 


8950 


6590 


6460 


AC -FT 


346400 


386500 


1185000 


1679000 


1037000 


575800 


379800 


371400 


512600 


588400 


484400 


458100 


e Estimated. 

























SACRAMENTO RIVER BASIN 
11 390500 SACRAMENTO RIVER BELOW WILKINS SLOUGH. NEAR GRIMES, CA— Continued 

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1946 - 1997, BY WATER YEAR (WY) 

OCT NOV DEC JAN FEB MAR APR MAY JUN JUL 



153 



MEAN 


6581 


8512 


12330 


15000 


16490 


15140 


11300 


9251 


7631 


7292 


7246 


7186 


MAX 


11800 


20510 


27430 


27310 


28440 


29490 


24920 


23110 


17710 


11980 


10810 


10620 


(WY) 


1958 


1974 


1984 


1997 


1983 


1983 


1982 


1983 


1983 


1983 


1983 


1967 


HIN 


3330 


3839 


4103 


5281 


5013 


5152 


4201 


3397 


3451 


3784 


4086 


4065 


(WY) 


1978 


1993 


1977 


1991 


1991 


1977 


1994 


1992 


1992 


1992 


1947 


1977 



SUMMARY STATISTICS 

ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC-FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1946 - 1997 



4702490 






4035620 










12850 






11060 




10300 

17980 

5109 




1983 
1977 


28600 


Feb 


6 


31000 


Jan 4 


32600 


Feb 


20 1986 


4430 


Oct 


18 


4430 


Oct 18 


2720 


May 


7 1992 


4540 


Oct 


17 


4540 


Oct 17 


2880 


Oct 


12 1977 








31600 


Jan 4 


32700 


Feb 


20 1986 








52.68 


Jan 4 


52.68 


Jan 


4 1997 


9327000 






8005000 




7463000 






25100 






25600 




21900 






10200 






8380 




7940 






5740 






5360 




5010 







154 



SACRAMENTO RIVER BASIN 
1 1390500 SACRAMENTO RIVER BELOW WILKINS SLOUGH, NEAR GRIMES, CA— Continued 



WATER-QUALITY RECORDS 

PERIOD OF RECORD.--Water year 1967 to current year. 

PERIOD OF DAILY RECORD- 
WATER TEMPERATURE; October 1966 to current year. 

INSTRUMENTATION.-Temperature recorder since October 1966. 

EXTREMES FOR PERIOD OF DAILY RECORD- 
WATER TEMPERATURE: Maximum recorded, 25.5°C, Sept. 6-8. 1977, June 3-5, 1992; minimum recorded, 3.5°C. Dec. 23-25, 1990. 

EXTREMES FOR CURRENT YEAR.- 

WATER TEMPERATURE: Maximum recorded, 21.0°C. May 18. 19; minimum recorded, 6.0°C, Jan. 25. 

WATER TEMPERATURE, DEGREES CELSIUS, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 



MIN 



MAX 





OCTOBER 


NOVEMBER 


DECEMBER 


JANUARY 


FEBRUARY 


MARCH 


1 


18.5 


18.5 


14.0 


13.0 


11.5 


11.0 


10.5 


9.5 


10.0 


9.0 


11.5 


11.5 


2 


18.5 


18.0 


14.0 


13.5 


11.0 


11.0 


12.5 


10.5 


10.0 


9.5 


11.5 


11.5 


3 


18.5 


18.0 


14.0 


13.5 


11.0 


10.0 


13.0 


12.5 


10.0 


9.0 


11.5 


11.0 


4 


18.5 


18.0 


14.0 


13.5 


10.5 


10.5 


12.5 


11.5 


9.5 


8.0 


12.0 


11.5 


5 


19.0 


18.0 


14.0 


13.5 


10.5 


10.5 


11.5 


10.5 


10.0 


9.5 


11.5 


11.5 


6 


19.0 


18.0 


13.5 


13.0 


11.0 


10.5 


10.5 


9.5 


10.0 


9.5 


12.0 


11.5 


7 


19.0 


18.5 


13.0 


12.5 


11.0 


10.5 


9.5 


9.5 


9.5 


9.5 


12.0 


11.5 


8 


19.0 


18.5 


13.5 


12.5 


11.0 


10.5 


10.0 


9.5 


9.5 


9.5 


12.5 


12.0 


9 


19.0 


18.5 


13.5 


13.0 


11.5 


11.0 


10.0 


9.5 


9.5 


9.5 


13.0 


12.5 


10 


19.0 


18.0 


13.5 


13.0 


12.0 


11.5 


10.0 


9.5 


9.5 


9.5 


13.5 


13.0 


11 


18.5 


18.0 


14.0 


13.5 


12.0 


11.5 


10.0 


10.0 


10.0 


9.5 


14.0 


13.5 


12 


18.5 


18.0 


14.0 


13.5 


12.0 


11.5 


10.0 


9.5 


10.0 


10.0 


14.0 


13.5 


13 


18.5 


18.0 


14.5 


14.0 


12.5 


12.0 


10.0 


9.5 


10.5 


10.0 


14.0 


13.5 


14 


18.5 


17.5 


14.5 


14.0 


12.0 


11.5 


9.5 


8.5 


10.5 


10.0 


13.5 


13.0 


15 


18.0 


17.5 


14.0 


13.5 


11.5 


11.0 


9.0 


8.5 


11.0 


10.5 


14.0 


13.0 


16 


17.5 


16.0 


13.5 


13.0 


11.0 


11.0 


9.5 


9.0 


11.5 


10.5 


13.5 


13.0 


17 


16.0 


15.5 


13.0 


12.5 


11.0 


11.0 


10.0 


9.5 


11.5 


11.0 


13.0 


12.5 


18 


15.5 


15.0 


13.0 


12.5 


11.0 


11.0 


10.0 


10.0 


12.0 


11.0 


13.5 


13.0 


19 


15.0 


14.5 


13.5 


13.0 


11.0 


10.5 


10.0 


10.0 


12.0 


11.5 


13.5 


13.0 


20 


14.5 


13.5 


14.0 


13.5 


10.5 


10.5 


10.0 


9.5 


12.0 


11.5 


14.5 


13.5 


21 


13.5 


13.0 


14.0 


14.0 


10.5 


10.0 


10.0 


9.5 


11.5 


11.0 


15.0 


14.5 


22 


13.5 


13.0 


14.0 


14.0 


10.0 


9.5 


9.5 


9.0 


11.5 


11.0 


15.5 


15.0 


23 


14.0 


13.0 


14.0 


14.0 


10.0 


10.0 


9.5 


9.0 


11.5 


11.0 


16.0 


15.0 


24 


14 .0 


14.0 


14.0 


13.5 


10.0 


10.0 


9.0 


8.5 


11.5 


11.0 


16.5 


16.0 


25 


14.0 


13.5 


13.5 


13.0 


10.0 


10.0 


8.5 


6.0 


11.5 


11.0 


16.5 


16.0 


26 


13.5 


13.0 


13.0 


12.5 


10.0 


10.0 


9.0 


7.5 


11.5 


11.0 


17.0 


16.5 


27 


13.0 


12.5 


12.5 


12.0 


10.0 


9.0 


10.0 


8.5 


12.0 


11.5 


17.0 


16.5 


28 


12.5 


12.5 


12.0 


12.0 


10.0 


9.0 


10.5 


9.5 


12.0 


11.5 


16.5 


16.0 


29 


12.5 


12.5 


12.0 


11.5 


10.0 


9.5 


10.5 


10.0 








16.0 


15.5 


30 


13.0 


12.5 


11.5 


11.0 


10.0 


9.0 


10.5 


9.0 








15.5 


15.0 


31 


13.5 


12.5 








10.0 


9.5 


10.0 


9.0 








15.5 


14.5 



19.0 



12.5 



14.5 



11.0 



12.5 



9.0 



13.0 



6.0 



12.0 



8.0 



17.0 



11.0 



SACRAMENTO RIVER BASIN 
1 1390500 SACRAMENTO RIVER BELOW WILKINS SLOUGH, NEAR GRIMES, C A— Continued 
WATER TEMPERATURE, DEGREES CELSIUS, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 



155 



DAY 



MIN 



1 


15.0 


14.0 


2 


14.0 


13.0 


3 


13.5 


13.0 


4 


14.5 


13.0 


5 


14.0 


13.5 


6 


14.5 


13.5 


7 


15.0 


14.0 


8 


15.5 


14.5 


9 


15.5 


14.5 


10 


15.0 


14.5 


11 


15.0 


14.5 


12 


15.5 


14.5 


13 


16.5 


15.0 


14 


17.0 


15.5 


15 


17.5 


16.5 


16 


18.0 


17.0 


17 


19.0 


18.0 


18 


18.5 


18.0 


19 


18.0 


17.0 


20 


17.5 


16.5 


21 


17.5 


17.0 


22 


17.5 


17.0 


23 


17.0 


16.5 


24 


16.5 


16.0 


25 


16.5 


16.0 


26 


17.0 


16.0 


27 


18.5 


17.0 


28 


18.5 


18.0 


29 


18.5 


18.0 


30 


18.0 


17.5 


31 









M 


AY 


JU 


NE 


JU 


LY 


AUGUST 


SEPTEMBER 


18.0 


17.0 


20.0 


19.5 


18.5 


17.0 


19.5 


18.0 


20.5 


20.0 


17.5 


16.5 


20.0 


19.5 


18.5 


17.0 


19.5 


18.0 


20.5 


19.5 


17.0 


16.5 


20.0 


19.0 


19.0 


17.5 


19.5 


18.0 


20.0 


19.5 


17.0 


16.5 


19.0 


18.0 


19.5 


18.0 


19.5 


18.0 


20.0 


19.5 


18.0 


17.0 


18.5 


18.0 


20.0 


18.5 


20.0 


18.0 


20.5 


19.5 


18.5 


17.5 


19.0 


18.0 


20.0 


18.5 


19.5 


18.0 


20.0 


19.5 


19.0 


18.5 


19.5 


18.5 


20.5 


19.0 


20.0 


18.0 


19.5 


19.0 


19.5 


18.5 


20.0 


19.5 


20.5 


19.0 


20.0 


18.0 


19.5 


18.5 


19.5 


19.0 


20.5 


20.0 


20.5 


19.0 


19.5 


18.5 


19.0 


18.5 


20.0 


19.5 


20.5 


19.5 


20.5 


18.0 


19.5 


18.5 


19.0 


18.0 


20.0 


19.5 


20.0 


19.5 


20.0 


19.0 


19.5 


18.0 


19.0 


18.5 


20.0 


19.5 


19.5 


19.0 


19.5 


18.0 


19.5 


18.5 


19.0 


18.5 


20.0 


20.0 


19.5 


18.5 


19.5 


18.0 


20.0 


18.5 


19.5 


18.5 


20.0 


19.5 


19.0 


18.5 


19.5 


18.5 


20.0 


18.5 


19.0 


19.0 


20.0 


19.5 


19.5 


18.5 


19.5 


18.5 


20.0 


19.0 


19.0 


18.0 


20.0 


20.0 


20.0 


17.0 


19.5 


18.5 


20.0 


19.0 


18.5 


18.0 


20.5 


20.0 


20.0 


19.0 


19.5 


18.0 


20.0 


19.0 


18.0 


17.5 


21.0 


20.5 


20.0 


19.0 


19.5 


18.0 


19.5 


19.0 


17.5 


17.0 


21.0 


20.5 


20.0 


19.0 


20.0 


18.0 


19.5 


19.5 


17.5 


16.5 


20.5 


20.5 


19.5 


19.0 


20.0 


18.5 


19.5 


19.5 


17.5 


16.5 


20.5 


20.0 


19.5 


18.5 


20.0 


18.5 


20.0 


19.5 


18.0 


17.0 


20.0 


19.5 


19.5 


18.5 


20.5 


19.0 


20.0 


19.5 


18.5 


17.5 


19.5 


18.5 


19.5 


18.0 


20.0 


19.0 


20.0 


19.5 


19.0 


18.0 


18.5 


18.0 


19.0 


18.0 


19.5 


18.5 


20.0 


19.5 


19.0 


18.5 


18.5 


18.0 


19.5 


18.0 


19.5 


18.0 


20.5 


19.5 


19.5 


18.5 


18.5 


17.5 


19.5 


18.0 


20.0 


18.0 


20.5 


20.0 


19.5 


18.5 


18.5 


17.5 


19.5 


18.0 


19.5 


18.5 


20.5 


20.0 


19.0 


18.5 


18.5 


18.0 


19.0 


18. 


19.5 


18.0 


20.5 


19.5 


18.5 


17.5 


19.0 


18.5 


18.5 


17.5 


20.0 


18.5 


20.5 


20.0 


18.5 


17.5 


19.0 


18.5 


18.5 


17.0 


20.0 


18.5 


20.5 


20.0 


18.5 


18.0 


19.5 


19.0 








19.5 


18.0 


20.5 


20.0 









MONTH 19.0 



13.0 



21.0 



16.5 



20.5 



17.0 



20.5 



17.0 



20.5 



18.0 



20.5 



16.5 



156 



SACRAMENTO RIVER BASIN 
1 1390890 COLUSA BASIN DRAIN AT ROAD 99E, NEAR KNIGHTS LANDING, CA 



LOCATION.--Lat 38''48' 45", long 12r46'23", in NW 1/4 SE 1/4, sec.8. Til N., R.2 E., Yolo Couniy, Hydrologic Unit 18020104, on downstream 
side of bridge over "Ridgecut" at the intersection of Road 99E and Road 108, and 3.2 mi west of Knights Landmg. 

DRAINAGE AREA.-- Indeterminate. 

PERIOD OF RECORD- Water years 1996 to current year. 
CHEMICAL DATA.-Water yearsl996 to current year. 
SPECIFIC CONDUCTANCE- Water years 1995 to current year. 
WATER TEMPERATURE. -Water years 1995 to current year. 
SEDIMENT DATA.-Water years 1996 to current year. 

PERIOD OF DAILY RECORD - 
WATER STAGE: Water year 1996. 

SPECIFIC CONDUCTANCE: October 1995 to current year. 
WATER TEMPERATURE: October 1995 to current year. 

INSTRUMENTATION. -Water-quality monitor since October 1995. 

REMARKS. -Interruptions in record were due to malfijnction of the recording instrument. 

EXTREMES FOR PERIOD OF RECORD.- 

SPECIFIC CONDUCTANCE: Maximum recorded, 1,060 microsiemens, Jan. 16, 1996; minimimi recorded, 104 microsiemens, Jan. 4, 1997. 
WATER TEMPERATURE: Maximum recorded, 30.0°C, June 9, July 30, 31, 1996; minimum recorded, 3.5°C, Jan 14, 1997. 

EXTREMES FOR CURRENT YEAR- 
SPECIFIC CONDUCTANCE: Maximum recorded, 958 microsiemens. Mar. 9, 10; minimum recorded, 104 microsiemens, Jan. 4. 
WATER TEMPERATURE: Maximum recorded, 27.5°C, May 19; minimum recorded, 3.5°C, Jan. 14. 

WATER-QUALITY DATA, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 



OCT 

18. . 
NOV 

07.. 
DEC 

03.. 
JAN 

14. . 
FEB 

18. . 
MAR 

18. . 
APR 

09. . 

24. . 
MAY 

09. . 

23. . 
JUN 

06. . 

17.. 
JUL 

10.. 

28. . 
AUG 

26. . 
SEP 

18.. 





DIS- 




PH 




BARO- 




OXYGEN, 








CHARGE, 


SPE- 


WATER 




METRIC 




DIS- 




MAGNE- 




INST. 


CIFIC 


WHOLE 




PRES- 




SOLVED 


CALCIUM 


SIUM, 




CUBIC 


CON- 


FIELD 


TEMPER- 


SURE 


OXYGEN, 


(PER- 


DIS- 


DIS- 




FEET 


DUCT- 


(STAND- 


ATURE 


(MM 


DIS- 


CENT 


SOLVED 


SOLVED 


TIME 


PER 


ANCE 


ARD 


WATER 


OF 


SOLVED 


SATUR- 


(MG/L 


(MG/L 




SECOITO 


(US/CM) 


UNITS) 


(DEG C) 


HG) 


(MG/L) 


ATION) 


AS CA) 


AS MG) 




(00061) 


(00095) 


(00400) 


(00010) 


(00025) 


(00300) 


(00301) 


(00915) 


(00925) 


0950 


-- 


664 


8.3 


15.0 


760 


9.8 


97 


34 


26 


1330 


586 


576 


7.9 


12.5 


770 


7.6 


71 


33 


24 


1000 


570 


613 


8.0 


9.0 


768 


9.2 


79 


33 


25 


1130 


2360 


600 


8.2 


3.5 


766 


11.6 


— 


32 


22 


1130 


559 


713 


8.1 


11.5 


766 


9.0 


82 


37 


25 


1030 


1180 


626 


8.3 


14.0 


771 


8.2 


78 


35 


23 


1100 


497 


629 


8.2 


15.0 


764 


9.2 


91 


34 


25 


0940 


192 


517 


8.2 


18.0 


762 


8.4 


89 


26 


19 


0900 


73 


583 


8.6 


21.0 


762 


8.0 


90 


29 


21 


1030 


-- 


640 


8.0 


22.0 


761 


6.4 


74 


32 


23 


1110 


__ 


712 


8.1 


23.0 


756 


6.0 


71 


36 


27 


1000 


127 


712 


8.3 


25.0 


761 


9.2 


112 


35 


27 


0940 


400 


714 


7.9 


28.0 


758 


5.2 


67 


35 


27 


1100 


506 


647 


7.8 


27.0 


762 


5.0 


63 


34 


27 


1100 


1670 


580 


7.8 


23.0 


762 


5.5 


64 


32 


23 


1000 


553 


551 


8.0 


20.0 


758 


6.7 


74 


34 


22 



SACRAMENTO RIVER BASIN 

1 1390890 COLUSA BASIN DRAIN AT ROAD 99E, NEAR KNIGHTS LANDING, C A— Continued 

WATER-QUALITY DATA, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 



157 



OCT 

18. 
NOV 

07. 
DEC 

03. 
JAN 

14. 
FEB 

18. 
MAR 

18. 
APR 

09. 

24. 
MAY 

09. 

23. 
JUN 

06. 

17. 
JUL 

10. 

28. 
AUG 

26. 
SEP 

18. 



OCT 

18. 
NOV 

07. 
DEC 

03. 
JAN 

14. 
FEB 

18. 
MAR 

18. 
APR 

09. 

24. 
MAY 

09. 

23. 
JUN 

06. 

17. 
JUL 

10. 

28. . 
AUG 

26. . 
SEP 

18. 



SODIUM, 

DIS- 
SOLVED 

(MG/L SODIUM 



ALKA- 
POTAS- LINITY 
SIUM, WAT.DIS SULFATE 
DIS- GRAN T. DIS- 
SOLVED FIELD SOLVED 
(MG/L CAC03 (MG/L 



AS NA) PERCENT AS K) 



(MG/L) AS S04) 



CHLO- 


FLUO- 


RIDE, 


RIDE, 


DIS- 


DIS- 


SOLVED 


SOLVED 


(MG/L 


(MG/L 


AS CD 


AS F) 



SOLIDS, SOLIDS, 

SILICA, RESIDUE SUM OF 

DIS- AT 180 CONSTI- 

SOLVED DEG. C TUENTS, 

(MG/L DIS- DIS- 

AS SOLVED SOLVED 

SI02) (MG/L) (MG/L) 



(00930) (00932) (00935) (29802) (00945) (00940) (00950) (00955) (70300) (70301) 



70 
56 
59 
62 
72 
61 

62 

51 

63 
69 

74 
79 

75 
66 

51 

53 



SOLIDS, 
DIS- 
SOLVED 
(TONS 

PER 
AC-FT) 



44 

39 

40 

44 

44 

42 

41 
43 

46 
46 

44 
46 

45 
42 

39 

39 



2.7 

5.8 

3.7 

3.3 

2.8 

2.4 

2.6 
2.3 

2.3 
2.2 

2.0 
2.1 

1.8 
1.2 

3.3 

2.6 



170 

130 

180 

180 

210 

160 

160 
140 

150 
150 

200 
190 

230 
220 

190 

180 



80 

62 

67 

84 

100 

93 

75 
57 

62 
87 

92 
90 

78 
59 

33 

52 



32 

24 

27 

30 

37 

34 

31 
26 

28 
32 

37 
41 

33 
28 

23 

25 



.30 

.30 

.40 

.40 

.40 

.30 

.30 
.31 

.37 
.39 

.40 
.38 

.40 
.37 

.37 

.32 



NITRO- NITRO- NITRO- NITRO- NITRO- 
GEN, GEN, GEN, GEN, AM- GEN,AM- 
NITRITE N02+N03 AMMONIA MONIA + MONIA + PHOS- 
DIS- DIS- DIS- ORGANIC ORGANIC PHORUS 
SOLVED SOLVED SOLVED TOTAL DIS. TOTAL 
(MG/L (MG/L (MG/L (MG/L (MG/L (MG/L 
AS N) AS N) AS N) AS N) AS N) AS P) 



17 


424 


399 


25 


360 


355 


21 


379 


370 


18 


386 


366 


15 


436 


423 


15 


357 


376 


15 


304 


375 


17 


307 


304 


17 


314 


327 


19 


394 


381 


19 


447 


420 


18 


404 


425 


21 


438 


395 


24 


403 


385 


24 


342 


323 


23 


352 
PHOS- 


338 


PHOS- 


PHORUS 


ALUM- 


PHORUS 


ORTHO, 


INUM, 


DIS- 


DIS- 


DIS- 


SOLVED 


SOLVED 


SOLVED 


(MG/L 


(MG/L 


(UG/L 


AS P) 


AS P) 


AS AL) 



(70303) (00613) (00631) (00608) (00625) (00623) (00665) (00666) (00671) (01106) 



.58 

.49 

.52 

.52 

.59 

.49 

.41 
.42 

.43 

.54 

.61 
.55 

.60 
.55 

.47 

.48 



030 




.080 


030 




.170 


020 




.250 


020 




.400 


030 




.660 


060 


1 


.50 


030 
046 


1 


.00 
931 



020 


.70 


080 


.90 


110 


.80 


040 


.80 


040 


.60 


080 


1.1 


050 


.60 


103 


.82 



.039 

.023 

.010 
.018 
.014 



.487 



.187 



.033 



.021 



.95 



.86 



279 


.025 


.74 


141 


<.015 


1.3 


328 


.030 


.67 



.40 

.60 

.50 

.60 

.40 

.40 

.30 
.34 



.47 

.42 

.46 

.40 



.180 

.270 

.260 

.290 

.120 

.350 

.250 
.256 

.270 

.147 

.206 
.210 
.215 



.080 

.170 

.120 

.140 

.080 

.110 

.120 
.126 

.097 

.020 

.091 
.086 
.097 



.090 

.160 

.120 

.130 

.080 

.110 

.130 
.102 

.100 

.029 

.085 
.074 
.098 



6.0 
5.0 
4.0 
4.0 
5.0 
4.0 
5.0 

4.4 

4.7 

4.5 

5.9 
6.1 



158 



SACRAMENTO RIVER BASIN 

1 1390890 COLUSA BASIN DRAIN AT ROAD 99E, NEAR KNIGHTS LANDING, CA— Continued 

WATER-QUALITY DATA, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 



OCT 

18.. 
NOV 

07. . 
DEC 

03.. 
JAN 

14.. 
FEB 

18.. 
MAR 

18.. 
APR 

09. . 
24.. 

MAY 

09.. 

23. . 
JUN 

06.. 

17. . 
JUL 

10. . 
28. . 

AUO 

26. . 
SEP 

18. . 



ANTI- 
MONY, ARSENIC BARIUM, 

DIS- DIS- DIS- 
SOLVED SOLVED SOLVED 
(UG/L (UG/L (UG/L 



<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 

<1.0 

<1.0 
<1.0 

<1.0 
<1.0 



BERYL- 




CHRO- 






LIUM, 


CADMIUM 


MIUM, 


COBALT, 


COPPER, 


DIS- 


DIS- 


DIS- 


DIS- 


DIS- 


SOLVED 


SOLVED 


SOLVED 


SOLVED 


SOLVED 


(UG/L 


(UG/L 


(UG/L 


(UG/L 


(UG/L 



IRON, LEAD, 
DIS- DIS- 
SOLVED SOLVED 
(UG/L (UG/L 



AS SB) AS AS) 



AS BA) AS BE) AS CD) AS CR) AS CO) AS CU) AS FE) AS PB) 



(01095) (01000) (01005) (01010) (01025) (01030) (01035) (01040) (01046) (01049) 



90 


<1.0 


<1.0 


73 


<1.0 


<1.0 


72 


<1.0 


<1.0 


85 


<1.0 


<1.0 


91 


<1.0 


<1.0 


90 


<1.0 


<1.0 


86 


<1.0 


<1.0 



94 



<1.0 



<1.0 



95 


<1.0 


<1.0 


105 


<1.0 


<1.0 


88 


<1.0 


<1.0 


87 


<1.0 


<1.0 



2.0 <1.0 

3.0 <1.0 

4.0 <1.0 

2.0 <1.0 

1.0 <1.0 

2.0 <1.0 

4.0 <1.0 



3.5 

2.5 
6.3 

1.2 
3.3 



<1.0 

<1.0 
<1.0 

<1.0 
<1.0 



2.0 


<3.0 


<1.0 


3.0 


74 


<1.0 


2.0 


24 


<1.0 


3.0 


18 


<1.0 


3.0 


7.0 


<1.0 


2.0 


<3.0 


<1.0 


2.0 


3.0 


<1.0 


-- 


3.4 


-- 


__ 


4.8 


__ 


2.7 


8.6 


<1.0 


__ 


4.1 


__ 


4.1 


4.0 


<1.0 


1.7 


<3.0 


<1.0 


-- 


3.7 


-- 


2.8 


13 


<1.0 


2.6 


3.5 


<1.0 



DATE 



OCT 

18.. 
NOV 

07. , 
DEC 

03.. 
JAN 

14.. 
FEB 

18., 
MAR 

18., 
APR 

09. , 

24. , 
MAY 

09. , 

23. , 

jxnj 

06.. 

17.. 
JUL 

10.. 

28. . 
AUG 

26. . 
SEP 

IS.. 



MANGA- 
NESE, 
DIS- 
SO LVED 
(UG/L 
AS MN) 



MOLYB- 
DENUM, NICKEL, 



2.0 
26 
43 

4.0 

47 

13 

32 
4.9 

1.4 

17 

19 
1.2 

29 
22 

8.3 

18 



DIS- 
SOLVED 
(UG/L 
AS MO) 



DIS- 
SOLVED 
(UG/L 



SELE- 
NIUM, 
DIS- 
SOLVED 
(UG/L 



SILVER, 
DIS- 
SOLVED 
(UG/L 



ZINC, 

DIS- 
SOLVED 
(UG/L 



CARBON, 

URANIUM CARBON, ORGANIC 

NATURAL ORGANIC SUS- 

DIS- DIS- FENDED 

SOLVED SOLVED TOTAL 

(UG/L (MG/L (MG/L 



AS NI) AS SE) 



AS AG) AS ZN) 



AS U) 



AS C) 



2.0 
2.0 
2.0 
3.0 
3.0 
2.0 
2.0 

3.2 

3.3 
3.2 

2.7 
2.3 



3.0 
5.0 
3.0 
4.0 
3.0 
3.0 
3.0 

2.7 

3.0 
2.4 

2.8 
1.9 



<1 
<1 
<1 
<1 
<1 
<1 
<1 

<1 

<1 

<1 

<1 

<1 



<1.0 <1.0 1.0 

<1.0 4.0 <1.0 

<1.0 <1.0 <1.0 

<1.0 <1.0 1.0 

<1.0 <1.0 1.0 

<1.0 -- 1.0 

<1.0 2.0 1.0 



<1.0 



1.3 



<1.0 


1.5 


1.4 


<1.0 


<1.0 


1.1 


<1.0 


2.6 


<1.0 


<1.0 


6.1 


<1.0 



4.4 
9.1 
6.8 
7.3 
5.1 



3.2 

4.6 



4.8 
5.1 



5.6 
4.7 



5.2 
3.8 



AS C) 



(01056) (01060) (01065) (01145) (01075) (01090) (22703) (00681) (00689) 



1.9 
1.5 

.90 
1.4 
2.1 



1.5 

1.8 



1.2 
1.3 



1.3 
.90 



1.8 
1.0 



SACRAMENTO RIVER BASIN 
1 1390890 COLUSA BASIN DRAIN AT ROAD 99E, NEAR KNIGHTS LANDING, CA— Continued 
SUSPENDED-SEDIMENT DISCHARGE, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 



159 



OCT 




18. 


. .N 


NOV 




07. 


. .N 


DEC 




03. 


. .N 


JAN 




14. 


. .N 


FEB 




18. 


. .N 


MAR 




18. 


. .N 


APR 




09. 


. .N 


24. 


. .N 


MAY 




09. 


. .N 


23. 


. .N 


JUN 




06. 


. .N 


17. 


. .N 


JUL 




10. 


. .N 


28. 


. .N 


AUG 




26. 


. .N 


SEP 




18. 


. .N 





DIS- 






SEDI- 




CHARGE, 






MENT, 




INST. 




SEDI- 


DIS- 




CUBIC 


TEMPER- 


MENT, 


CHARGE, 




FEET 


ATURE 


SUS- 


SUS- 


TIME 


PER 


WATER 


PENDED 


PENDED 




SECOND 


(DEG C) 


(MG/L) 


(T/DAY) 




(00061) 


(00010) 


(80154) 


(80155) 


0950 


— 


15.0 


75 


— 


1330 


586 


12.5 


60 


95 


1000 


570 


9.0 


84 


129 


1130 


2360 


3.5 


137 


872 


1130 


559 


11.5 


167 


252 


1030 


1180 


14.0 


278 


887 


1100 


497 


15.0 


121 


162 


0940 


192 


18.0 


142 


74 


0900 


73 


21.0 


__ 


__ 


1030 


-- 


22.0 


131 


-- 


1110 


__ 


23.0 


154 


__ 


1000 


127 


25.0 


68 


23 


0940 


400 


28.0 


135 


146 


1100 


506 


27.0 


116 


158 


1100 


1670 


23.0 


226 


1020 


1000 


553 


20.0 


148 


221 



SPECIFIC CONDUCTANCE, US/CM @ 25 DEGREES CELSIUS, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 



MAX MIN 

OCTOBER 



MIN 



MAX 



MIN 



DECEMBER 



1 


596 


565 


2 


590 


558 


3 


566 


555 


4 


567 


543 


5 
6 


598 


543 


7 
8 
9 


632 


621 


10 


650 


632 


11 


668 


650 


12 


682 


668 


13 


692 


680 


14 


705 


692 


15 


704 


689 


16 


698 


689 


17 


691 


658 


18 


668 


662 


19 


680 


662 


20 


715 


675 


21 


725 


683 


22 


684 


663 


23 


680 


649 


24 


678 


577 


25 


585 


566 


26 


579 


547 


27 


567 


544 


28 


571 


545 


29 


564 


552 


30 


571 


546 


31 


591 


546 



567 


532 


532 


513 


539 


523 


558 


538 


573 


558 


595 


572 


580 


569 


572 


565 


580 


571 


592 


580 


592 


587 


588 


581 


591 


586 


592 


588 


591 


587 


591 


585 


590 


583 


585 


565 


579 


560 


560 


551 


559 


544 


572 


544 


571 


546 


557 


546 


552 


543 


556 


538 


567 


556 


584 


565 


599 


577 


606 


592 



617 


605 


614 


605 


620 


606 


628 


590 


590 


549 


586 


570 


606 


578 


648 


606 


697 


648 


719 


697 


743 


719 


727 


636 


643 


607 


635 


619 


680 


632 


707 


673 


708 


692 


745 


635 


763 


652 


790 


682 


802 


776 


804 


761 


813 


779 


856 


811 


871 


832 


849 


821 


851 


809 


828 


779 


828 


778 


798 


782 


784 


729 



JANUARY 


740 


127 


138 


108 


134 


105 


132 


104 


512 


106 


233 


132 


414 


208 


455 


405 


500 


446 


532 


485 


566 


513 


584 


553 


609 


554 


635 


573 


665 


626 


709 


644 


734 


683 


777 


724 


814 


759 


841 


788 


834 


784 


837 


394 


394 


238 


397 


330 


355 


262 


303 


263 


375 


159 


282 


245 


316 


258 


319 


281 


315 


277 



305 
335 
321 



274 
291 



863 



826 



862 


817 


817 


806 


876 


811 


958 


872 


958 


877 


877 


743 


743 


701 


711 


694 


742 


711 


750 


707 


724 


700 


704 


622 


640 


560 


571 


549 


620 


571 


702 


620 


752 


702 


749 


711 


711 


670 


691 


669 


739 


691 


734 


715 


719 


672 


686 


668 


681 


657 


670 


632 



MONTH 



725 



543 



606 



513 



871 



549 



841 



104 



335 



274 



958 



549 



160 SACRAMENTO RIVER BASIN 

1 1390890 COLUSA BASIN DRAIN AT ROAD 99E, NEAR KNIGHTS LANDING, CA— Continued 
SPECIFIC CONDUCTANCE, US/CM @ 25 DEGREES CELSIUS, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 



MAX 



MIN 



MAX 



MIN 



MAX 



MIN 



MAX 



MIN 



MAX 



MIN 



1 


632 


606 


593 


548 


619 


581 


2 


615 


600 


593 


530 


629 


608 


3 


639 


598 


695 


593 


634 


608 


4 


631 


611 


695 


641 


644 


630 


5 


616 


595 


642 


566 


647 


626 


e 


623 


608 


567 


543 


815 


612 


7 


634 


600 


556 


544 


767 


635 


8 


653 


598 


589 


550 


637 


598 


9 


653 


613 


615 


566 


616 


596 


10 


615 


582 


650 


591 


627 


607 


11 


592 


569 


649 


603 


650 


620 


12 


573 


533 


661 


624 


665 


641 


13 


551 


530 


696 


649 


702 


657 


14 


572 


542 


695 


663 


716 


683 


15 


566 


544 


762 


662 


708 


675 


16 


587 


566 


792 


736 


719 


673 


17 


570 


546 


736 


643 


727 


694 


18 


589 


545 


661 


628 


747 


714 


19 


568 


541 


671 


639 


762 


723 


20 


589 


564 


662 


621 


773 


733 


21 


580 


562 


644 


622 


796 


757 


22 


579 


550 


655 


624 


812 


777 


23 


550 


516 


667 


631 


809 


790 


24 


520 


504 


687 


632 


825 


800 


25 


525 


505 


653 


540 


831 


805 


26 


582 


525 


543 


512 








27 


600 


563 


518 


503 








28 


603 


580 


521 


502 








29 


604 


587 


546 


521 








30 


603 


577 


584 


542 








31 








602 


582 









AUGUST 



SEPTEMBER 



652 



660 
658 



633 



637 
636 



653 



504 



792 



502 



633 



SACRAMENTO RTVER BASIN 

1 1390890 COLUSA BASIN DRAIN AT ROAD 99E, NEAR KNIGHTS LANDING. CA— Continued 

WATER TEMPERATURE. DEGREES CELSIUS. WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 



161 



lAY 


MAX 


MIN 




OCTOBER 


1 


22.0 


21.0 


2 


21.5 


21.0 


3 


22.0 


21.0 


4 


22.5 


21.5 


5 
6 

7 
8 
9 


23.5 


22.0 


25.5 


22.5 


10 


25.5 


22.0 


11 


23.5 


20.5 


12 


21.5 


20.0 


13 


22.5 


20.0 


14 


21.0 


19.0 


15 


20.5 


18.5 


16 


18.5 


17.0 


17 


17.5 


16.0 


18 


16.0 


15.0 


19 


16.0 


14.5 


20 


15.0 


13.5 


21 


13.5 


12.0 


22 


13.5 


11.5 


23 


14.0 


12.5 


24 


14.5 


13.5 


25 


14.5 


13.0 


26 


13.5 


11.0 


27 


13.0 


11.0 


28 


13.0 


11.5 


29 


13.0 


12.0 


30 


12.5 


11.5 


31 


13.5 


12.0 



NOVEMBER 




13.5 


12. 


.5 


14.0 


13, 


.0 


14.0 


13, 


.5 


14.0 


13, 


,5 


13.5 


13 


.0 


13.0 


12 


.0 


13.0 


12 


.5 


13.0 


12 


.0 


13.0 


12 


.0 


13.5 


12 


.5 


14.5 


13 


.0 


14.5 


14 


.0 


15.0 


14 


.0 


15.0 


14 


.0 


14.5 


13 


.5 


14.0 


13 


.0 


13.5 


12 


.5 


14.5 


13 


.5 


14.0 


13 


.5 


15.0 


14 


.0 


14.5 


14 


.5 


15.0 


14, 


.0 


15.0 


14, 


.5 


14.5 


14 


,0 


14.5 


14, 


.0 


14.0 


12, 


,5 


12.5 


12, 


.0 


12.0 


11, 


,0 


11.0 


10, 


,0 


10.5 


10, 


,0 



DECEMBER 




11.0 


10, 


.0 


10.5 


9, 


.0 


9.5 


9. 


.0 


9.5 


9, 


.5 


10.0 


9 


.5 


10.0 


9 


.5 


10.5 


10 


.0 


11.0 


10 


.5 


11.5 


11 


.0 


12.0 


11 


.5 


13.5 


12 


.0 


13.5 


13 


.0 


13.5 


12 


.5 


12.5 


10 


.5 


10.5 


10 


.0 


10.5 


10 


.0 


10.0 


9 


.0 


9.0 


8 


,0 


8.5 


8 


.0 


8.5 


7 


.5 


7.5 


7 


.5 


8.0 


7 


.5 


8.5 


7, 


.5 


8.0 


7 


.5 


8.0 


7, 


.5 


8.5 


8, 


,0 


9.5 


8, 


,0 


9.5 


9, 


.5 


10.0 


9, 


.5 


11.0 


10, 


.0 


12.0 


11. 


.0 



JANUARY 


12.5 


12.0 


12.5 


12.5 


13.0 


12.5 


12.5 


12.0 


12.0 


10.5 


10.5 


9.5 


9.5 


9.0 


9.5 


8.5 


9.0 


8.0 


8.5 


8.0 


8.0 


8.0 


8.0 


7.5 


7.5 


4.5 


4.5 


3.5 


4.0 


4.0 


5.0 


4.0 


6.5 


5.0 


8.0 


6.5 


9.0 


8.0 


9.5 


9.0 


10.0 


9.5 


10.0 


8.5 


8.5 


7.0 


8.0 


7.5 


9.5 


7.5 


10.5 


9.5 


11.0 


10.5 


11.5 


11.0 


12.0 


11.5 


12.0 


11.5 


12.0 


12.0 



MAX 


MIN 


FEBRUARY 




12.5 


12, 


.0 


12.5 


12, 


.0 



13, 


,0 


11. 


,5 


13 


,5 


11, 


,5 


14 


.5 


12. 


,5 


15 


.0 


13, 


.0 


15 


.5 


13 


.5 


17 


.0 


14 


.5 


17 


.0 


15 


.5 


16 


.5 


14 


.5 


16 


.0 


14 


.0 


16 


.0 


14 


.0 


16 


.5 


15 


.5 


16 


.0 


14 


.5 


16 


.0 


14 


.0 


15 


.5 


13 


.5 


17 


.0 


14 


.5 


18 


.0 


16 


.5 


18 


.5 


17 


.5 


19 


.5 


18 


.0 


20 


.0 


18 


.5 


20 


.0 


19 


.0 


20 


.5 


18 


.0 


21 


.0 


19 


.5 


20 


.5 


18 


.5 


19 


.5 


18, 


.0 


18 


.0 


15, 


.5 


18 


.0 


17 


.0 


17 


.5 


16 


.0 



25.5 



11.0 



15.0 



10.0 



13.5 



7.5 



13.0 



3.5 



12.5 



12.0 



21.0 



11.5 



JUNE 



MAX MIN 

JULY 



MAX MIN 

AUGUST 



MAX MIN 

SEPTEMBER 



1 


17.0 


14.5 


2 


15.0 


13.5 


3 


16.0 


13.0 


4 


15.5 


13.0 


5 


15.0 


13.0 


6 


15.5 


14.0 


7 


17.0 


14.5 


8 


17.5 


16.0 


9 


17.5 


15.0 


10 


17.0 


15.0 


11 


17.0 


15.5 


12 


17.5 


15.5 


13 


18.5 


16.0 


14 


19.0 


17.0 


15 


20.0 


17.5 


16 


20.5 


19.0 


17 


21.0 


20.0 


18 


21.0 


20.0 


19 


20.0 


18.5 


20 


20.0 


19.0 


21 


20.0 


19.5 


22 


20.0 


18.5 


23 


19.5 


18.5 


24 


19.0 


18.0 


25 


18.5 


16.5 


26 


20.5 


18.5 


27 


21.5 


19.0 


28 


21.0 


20.0 


29 


20.5 


19.0 


30 


22.0 


19.5 


31 









21 


.0 


19 


.5 


19 


.5 


18 


.5 


21 


.0 


19 


.5 


21 


.0 


19 


.5 


21 


.5 


20 


.0 


22 


.5 


20 


.0 


22 


.5 


21 


.0 


23 


.0 


21 


.5 


22 


.5 


21 


.0 


24 


.0 


22 


.0 


24 


.5 


22 


.5 


26 


.0 


23 


.0 


26 


.0 


23 


.5 


26 


.0 


23 


.5 


26 


.0 


23 


.5 


25 


.5 


23 


.5 


26 


.0 


24 


.5 


26 


.5 


25 


.0 


27 


.5 


25 


.5 


27 


.0 


23 


.5 


25 


.0 


23 


.0 


24, 


,0 


22 


.5 


22, 


.5 


21, 


.5 


22, 


,5 


21, 


.0 


22, 


.5 


20 


.5 


22, 


.0 


21 


.0 


23, 


.5 


21 


.0 


25, 


.0 


22 


.5 


25 


.5 


24 


.0 


26 


.0 


24 


.0 


26 


.5 


25 


.0 



26 


.0 


25 


.0 


26 


.0 


25, 


.0 


26 


.0 


24 


.0 


24 


.0 


23 


.5 


24 


.5 


23 


.0 


25 


.0 


23 


.0 


25 


.5 


23 


.5 


26 


.5 


24 


.0 


26 


.0 


23 


.5 


26 


.0 


23 


.5 


26 


.0 


23 


.5 


25 


.5 


23 


.0 


23 


.0 


21 


.5 


23 


.0 


20, 


.5 


24 


.0 


21 


.0 


22 


.5 


21, 


.5 


24 


.5 


21, 


.0 


23 


.5 


22, 


.5 


25 


.0 


23, 


.0 


26 


.0 


23, 


.5 


25, 


.5 


23, 


,5 


24, 


.0 


23, 


,0 


24, 


.0 


23, 


,0 


24, 


.0 


23, 


,0 


25, 


.5 


23, 


,5 



26.5 



26.0 
26.0 



25.0 



24.5 

24.0 



22.0 



13.0 



27.5 



18.5 



26.5 



26.5 



24.0 



162 



SACRAMENTO RIVER BASIN 
1 1 391 100 SACRAMENTO SLOUGH NEAR KNIGHTS LANDING, CA 



LOCATION.--Lat 38°47'06". long 121°39'12 ". in SE 1/4 NE 1/4. sec.20, Til N.. R.3 E., Sutter County, Hydrologic Unit 18020104, on right bank 
200 ft upstream of Kamak Pumping Plant, and 3.6 mi east of Knights Landing. 

DRAINAGE AREA.--Not determined. 

PERIOD OF RECORD.-- Water years 1996 to current year. 
CHEMICAL DATA.-February 1996 to current year. 
SPECinC CONDUCT ANCE.-October 1995 to September 1996. 
WATER TEMPERATURE. -October 1995 to September 1996. 
SEDIMENT DATA.-February 1996 to current year. 

PERIOD OF DAILY RECORD - 

SPECIFIC CONDUCT ANCE.-October 1995 to September 1996. 
WATER TEMPERATURE.-October 1995 to September 1996. 

WATER-QUALITY DATA, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 







DIS- 




PH 




BARO- 




OXYGEN, 










CHARGE, 


SPE- 


WATER 




METRIC 




DIS- 




MAGNE- 






INST. 


CIFIC 


WHOLE 




PRES- 




SOLVED 


CALCIUM 


SIUM, 






CUBIC 


CON- 


FIELD 


TEMPER- 


SURE 


OXYGEN, 


(PER- 


DIS- 


DIS- 






FEET 


DUCT- 


(STAND- 


ATURE 


(MM 


DIS- 


CENT 


SOLVED 


SOLVED 


DATE 


TIME 


PER 


ANCE 


ARD 


WATER 


OF 


SOLVED 


SATUR- 


(MG/L 


(MG/L 






SECOND 


(US/CM) 


UNITS) 


(DEG C) 


HG) 


(MG/L) 


ATION) 


AS CA) 


AS MG) 






(00061) 


(00095) 


(00400) 


(00010) 


(00025) 


(00300) 


(00301) 


(00915) 


(00925) 


OCT 






















17. . 


1000 


156 


390 


8.0 


16.5 


765 


8.1 


82 


26 


20 


NOV 






















07.. 


0930 


778 


305 


7.7 


12.5 


772 


8.8 


81 


23 


16 


DEC 






















05. . 


1100 


84 


335 


8.0 


11.0 


762 


9.6 


87 


25 


19 


MAR 






















06.. 


1130 


— 


307 


8.7 


12.0 


768 


9.8 


90 


24 


15 


APR 






















29.. 


1040 


— 


254 


8.0 


19.0 


763 


7.6 


82 


20 


13 


MAY 






















14. . 


1030 


— 


397 


7.9 


23.5 


762 


6.6 


78 


26 


17 


JUN 






















19.. 


1200 


— 


343 


7.9 


26.5 


762 


6.1 


76 


27 


19 


JUL 






















24.. 


1030 


— 


405 


7.7 


25.5 


764 


6.3 


77 


26 


18 


AUG 






















13. . 


1030 


-- 


341 


7.8 


25.0 


765 


7.0 


84 


26 


18 


SEP 






















24. , 


1430 




478 


8.0 
ALKA- 


23.0 


755 


7.6 


89 


33 
SOLIDS, 


22 

SOLIDS, 








POTAS- 


LINITY 




CHLO- 


FLUO- 


SILICA, 


RESIDUE 


SUM OF 




SODIUM, 




SIUM, 


WAT.DIS 


SULFATE 


RIDE, 


RIDE, 


DIS- 


AT 180 


CONSTI- 




DIS- 




DIS- 


GRAN T. 


DIS- 


DIS- 


DIS- 


SOLVED 


DEG. C 


TUENTS, 




SOLVED 




SOLVED 


FIELD 


SOLVED 


SOLVED 


SOLVED 


(MG/L 


DIS- 


DIS- 


DATE 


(MG/L 


SODIUM 


(MG/L 


CAC03 


(MG/L 


(MG/L 


(MG/L 


AS 


SOLVED 


SOLVED 



OCT 

17. 
NOV 

07. 
DEC 

05., 
MAR 

06. , 
APR 

29. 
MAY 

14. . 
JUN 

19. , 
JUL 

24. . 
AUG 

13. . 
SEP 

24.. 



AS NA) PERCENT AS K) 



(MG/L) AS S04) AS CL) AS F) 



SI02) 



(MG/L) 



(MG/L) 



(00930) (00932) (00935) (29802) (00945) (00940) (00950) (00955) (70300) (70301) 



24 
18 
19 
15 
13 
28 
17 
26 
18 
30 



26 
23 
22 
21 
22 
31 
20 
29 
22 
27 



2.3 
4.2 
3.3 

1.9 
1.5 
1.3 
1.4 
1.2 
1.5 
2.3 



94 


6.5 


18 


<.10 


26 


130 


10 


10 


.10 


25 


160 


7.1 


10 


<.10 


28 


120 


9.6 


11 


.10 


21 


90 


8.7 


9.1 


<.10 


22 


140 


15 


33 


.12 


23 


160 


8.9 


9.2 


.12 


27 


150 


12 


29 


.13 


26 


160 


6.9 


9.3 


.12 


27 


170 


8.8 


35 


.12 


30 



246 


230 


189 


190 


211 


209 


183 


184 


150 


155 


243 


228 


204 


206 


247 


235 


220 


206 


276 


271 



SACRAMENTO RIVER BASIN 
11391100 SACRAMENTO SLOUGH NEAR KNIGHTS LANDING, CA— Continued 
WATER-QUALITY DATA, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 



163 



OCT 

17. . 
NOV 

07. . 
DEC 

05. . 
MAR 

06. . 
APR 

29. . 
MAY 

14. . 
JUN 

19. . 
JUL 

24. . 
AUG 

13. . 
SEP 

24. . 



NITRO- NITRO- NITRO- NITRO- NITRO- 

SOLIDS, GEN, GEN, GEN, GEN, AM- GEN.AM- 

DIS- NITRITE N02*N03 AMMONIA MONIA * MONIA * PHOS- 

SOLVED DIS- DIS- DIS- ORGANIC ORGANIC PHORUS 

(TONS SOLVED SOLVED SOLVED TOTAL DIS. TOTAL 

PER (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L 

AC-FT) AS N) AS N) AS N) AS N) AS N) AS P) 



PHOS- 
PHOS- PHORUS 
PHORUS ORTHO, 
DIS- DIS- 
SOLVED SOLVED 
(MG/L (MG/L 
AS P) AS P) 



ALUM- 
INUM, 
DIS- 
SOLVED 
(UG/L 
AS AL) 



(70303) (00613) (00631) (00608) (00625) (00623) (00665) (00666) (00671) (01106) 



33 


.020 


.070 


<.015 


26 


.020 


.080 


.060 


29 


.020 


.140 


.070 


25 


<.010 


.160 


<.015 


20 


.010 


.184 


.023 


33 


.013 


.241 


.041 


28 


<.010 


.113 


<.015 


34 


<.010 


.171 


<.015 


30 


.010 


.088 


.049 


38 


<.010 


.078 


<.015 



60 


.30 


60 


.40 


60 


.40 


90 


<.20 


52 


.24 


67 


<.20 


31 


.23 


53 


<.20 


52 


.22 


50 


<.20 



.180 
.210 
.190 
.200 
.177 
.223 
.121 
.193 
.165 
.174 



100 


.120 


120 


.110 


080 


.100 


020 


.040 


080 


.078 


106 


.101 


085 


.093 


088 


.094 


095 


.087 


106 


.110 



5.0 
4.0 
3.0 
4.0 
5.3 
5.8 
6.7 
4.7 
4.4 
4.6 



DATE 



OCT 

17. 
NOV 

07. . 
DEC 

05. 
MAR 

06. 
APR 

29. 
MAY 

14. . 
JUN 

19. 
JUL 

24. . 
AUG 

13. 
SEP 

24. 



ANTI- 
MONY, ARSENIC BARIUM, 

DIS- DIS- DIS- 
SOLVED SOLVED SOLVED 
(UG/L (UG/L (UG/L 
AS SB) AS AS) AS BA) 



<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 
<1.0 



BERYL- 
LIUM, CADMIUM 
DIS- DIS- 
SOLVED SOLVED 
(UG/L (UG/L 
AS BE) AS CD) 



CHRO- 










MIUM, 


COBALT, 


COPPER, 


IRON, 


LEAD, 


DIS- 


DIS- 


DIS- 


DIS- 


DIS- 


SOLVED 


SOLVED 


SOLVED 


SOLVED 


SOLVED 


(UG/L 


(UG/L 


(UG/L 


(UG/L 


(UG/L 


AS CR) 


AS CO) 


AS CU) 


AS FE) 


AS PB) 



(01095) (01000) (01005) (01010) (01025) (01030) (01035) (01040) (01046) (01049) 



64 
51 
50 
46 
42 
56 
57 
63 
59 
70 



<1.0 


<1.0 


<1.0 


<1.0 


<1.0 


<1.0 


<1.0 


<1.0 


<1.0 


<1.0 


<1.0 


<1.0 


<1.0 


<1.0 


<1.0 


<1.0 


<1.0 


<1.0 


<1.0 


<1.0 



2.0 


<1.0 


3.0 


<1.0 


2.0 


<1.0 


2.0 


<1.0 


1.9 


<1.0 


2.2 


<1.0 


1.3 


<1.0 


2.0 


<1.0 


1.6 


<1.0 


1.9 


<1.0 



1.0 


10 


<1.0 


2.0 


49 


<1.0 


4.0 


32 


<1.0 


3.0 


<3.0 


<1.0 


1.8 


5.6 


<1.0 


3.0 


<3.0 


<1.0 


2.6 


4.7 


<1.0 


2.1 


<3.0 


<1.0 


2.2 


3.9 


<1.0 


2.0 


7.0 


<1.0 



164 



SACRAMENTO RIVER BASIN 
1 1391 100 SACRAMENTO SLOUGH NEAR KNIGHTS LANDING, CA— Continued 
WATER-QUALITY DATA, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 



OCT 

17. . 
NOV 

07.. 
DEC 

05.. 
MAR 

06. . 
APR 

29. . 
MAY 

14. . 
JUN 

19. . 
JUL 

24. . 
AUG 

13.. 
SEP 

24. . 



















CARBON, 


MANGA- 


MOLYB- 




SELE- 






URANIUM 


CARBON, 


ORGANIC 


NESE, 


DENUM, 


NICKEL, 


NIUM, 


SILVER, 


ZINC, 


NATURAL 


ORGANIC 


SUS- 


DIS- 


DIS- 


DIS- 


DIS- 


DIS- 


DIS- 


DIS- 


DIS- 


PENDED 


SOLVED 


SOLVED 


SOLVED 


SOLVED 


SOLVED 


SOLVED 


SOLVED 


SOLVED 


TOTAL 


(UG/L 


(UG/L 


{UG/L 


(UG/L 


(UG/L 


(UG/L 


(UG/L 


(MG/L 


(MG/L 


AS MN) 


AS MO) 


AS NI) 


AS SE) 


AS AG) 


AS ZN) 


AS U) 


AS C) 


AS C) 



(01056) (01060) (01065) (01145) (01075) (01090) (22703) (00681) (00689) 

.90 
1.0 
1.0 
1.5 



1.0 
1.1 
1.0 

.90 
1.2 



30 


1.0 


3.0 


<1 


<1.0 


<1.0 


<1.0 


4.5 


22 


1.0 


3.0 


<1 


<1.0 


1.0 


<1.0 


6.3 


72 


1.0 


2.0 


<1 


<1.0 


<1.0 


<1.0 


5.1 


28 


<1.0 


3.0 


<1 


<1.0 


— 


1.0 


3.6 


9.4 


<1.0 


1.9 


<1 


<1.0 


<1.0 


<1.0 


3.0 


11 


2.0 


2.1 


<1 


<1.0 


1.4 


<1.0 


3.4 


3.7 


1.1 


1.4 


<1 


<1.0 


1.2 


1.3 


3.7 


5.2 


2.1 


1.8 


<1 


<1.0 


<1.0 


<1.0 


2.8 


7.3 


1.3 


1.3 


<1 


<1.0 


<1.0 


<1.0 


3.3 


13 


2.0 


2.1 


<1 


<1.0 


<1.0 


1.2 


3.6 



SUSPENDED-SEDIMENT DISCHARGE, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 



OCT 




17. 


.N 


NOV 




07. 


.N 


DEC 




05. 


.N 


MAR 




06. 


.N 


APR 




29. 


.N 


MAY 




14. 


.N 


JUN 




19. 


.N 


JUL 




24. 


.N 


AUG 




13. 


.N 


SEP 




24. 


.N 





DIS- 






SEDI- 




CHARGE, 






MENT, 




INST. 




SEDI- 


DIS- 




CUBIC 


TEMPER- 


MENT, 


CHARGE, 




FEET 


ATURE 


SUS- 


SUS- 


TIME 


PER 


WATER 


PENDED 


PENDED 




SECOND 


(DEG C) 


(MG/L) 


(T/DAY) 




(00061) 


(00010) 


(80154) 


(80155) 


1000 


156 


16.5 


56 


24 


0930 


778 


12.5 


68 


143 


1100 


84 


11.0 


53 


12 


1130 


— 


12.0 


148 


— 


1040 


— 


19.0 


110 


— 


1030 


— 


23.5 


— 


~ 


1200 


— 


26.5 


83 


— 


1030 


— 


25.5 


93 


— 


1030 


— 


25.0 


67 


— 


1430 


__ 


23.0 


65 






SACRAMENTO RIVER BASIN 



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166 



SACRAMENTO RIVER BASIN 
U 395020 LITTLE GRASS VALLEY RESERVOIR NEAR LA PORTE, CA 



LOCATION.--Lat 39°43'25", long 121°0r 10". in SE 1/4 NW 1/4 sec.31. T.22 N., R.9 E., Plumas County. Hydrologic Unit 18020123. Plumas 
National Forest, on right bank 300 ft upstream from dam on South Fork Feather River, 3.3 mi northwest of La Porte. 

DRAINAGE AREA.--25.8 mi". 

PERIOD OF RECORD.-October 1961 to current year. Monthend elevation and contents only, October 1961 to October 1962. 

GAGE. --Water-stage recorder. Datum of gage is sea level (levels by Oroville- Wyandotte Irrigation District). Prior to Nov. 1. 1962, in valve chamber 
in dam at same datum. 

REMARKS. -Reservoir is formed by rockfill dam. Storage began in October 1961 . Total capacity, 94,700 acre-ft between elevations 4,876 ft, invert 
of release valve, and 5,047 ft, top of spillway gates, all of which is available for release. Water is released down South Fork Feather River for 
power development and irrigation. See schematic diagram of South Fork Feather River basin. Records represent total contents at 2400 hours. 

COOPERATION— Records provided by Oroville-Wyandotte Irrigation District, under general supervision of the U.S. Geological Survey, in 
connection with a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD. -Maximum contents, 98,000 acre-ft. May 1, 1995, and May 17, 1996, elevation. 5,049.0 ft; minimum 
since reservoir first filled, 30,300 acre-ft, many days during 1977, elevation, 4,994.8 ft. 

EXTREMES FOR CURRENT YEAR.-Maximum contents, 87.100 acre-ft, Jan. 1, elevation, 5,042.3 ft; minimum, 54.700 acre-ft, Dec. 4, elevation, 
5,019.0 ft. 

Capacity table (elevation, in feet, and contents, in acre-feet) 
(Based on survey by Pacific Gas & Electric Co. in 1963) 
4,990 26,300 5,030 68,900 

5,000 34,600 5,040 83,500 

5,010 44,400 5,048 96,300 

5,020 55,900 5,049 98,000 

RESERVOIR STORAGE (ACRE-FEET), WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 
DAILY OBSERVATION AT 2400 HOURS 

DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 



1 


67800 


61100 


55300 


86800 


75500 


69200 


72200 


80600 


82600 


77400 


70600 


60600 


2 


67700 


60700 


55100 


82600 


75300 


69000 


72400 


80900 


82500 


77200 


70200 


60200 


3 


67500 


60400 


54800 


79800 


75200 


68800 


72700 


81000 


82300 


77100 


69900 


59900 


i 


67200 


60000 


55000 


78200 


75000 


68500 


72800 


81100 


82200 


76800 


69500 


59900 


5 


67100 


59800 


55900 


77200 


75000 


68200 


73000 


81300 


82000 


76600 


69200 


59800 


6 


66800 


59400 


56000 


76600 


74700 


68000 


73100 


81400 


82000 


76500 


68800 


59500 


7 


66500 


59100 


56100 


76200 


74600 


67700 


73300 


81600 


81700 


76200 


68500 


59500 


8 


66400 


58700 


56300 


75900 


74400 


67500 


73600 


81700 


81600 


76000 


68100 


59400 


9 


66400 


58500 


58100 


75600 


74300 


67200 


73600 


81700 


81400 


75700 


67700 


59300 


10 


66400 


58100 


61100 


75300 


74100 


66900 


73700 


81900 


81300 


75600 


67500 


59100 


11 


66300 


57700 


63900 


75200 


73900 


66800 


73900 


82000 


81100 


75500 


67200 


59000 


12 


66300 


57400 


66200 


75000 


73700 


66800 


74000 


82200 


81000 


75200 


66800 


58900 


13 


66300 


57100 


67800 


74700 


73400 


66800 


74100 


82200 


80900 


75000 


66500 


58700 


14 


66200 


56800 


68800 


74600 


73100 


66900 


74300 


82300 


80700 


74700 


66300 


58700 


15 


66200 


56400 


69600 


74400 


73000 


66900 


74400 


82300 


80600 


74600 


65900 


58600 


16 


66000 


56100 


70200 


74100 


72700 


67200 


74600 


82500 


80400 


74300 


65600 


58500 


17 


65600 


56400 


70500 


74000 


72500 


67300 


74700 


82500 


80300 


74100 


65200 


58400 


18 


65400 


56800 


70800 


73700 


72200 


67600 


75200 


82600 


80000 


73900 


65000 


58200 


19 


65000 


57100 


71100 


73400 


72000 


67700 


75900 


82600 


79800 


73700 


64600 


58100 


20 


64700 


57100 


71400 


73300 


71800 


68000 


76500 


82600 


79700 


73600 


64300 


58100 


21 


64300 


56900 


72000 


73300 


71500 


68200 


77200 


82600 


79400 


73300 


64100 


58000 


22 


64100 


57100 


72400 


73600 


71200 


68500 


77600 


82600 


79200 


73100 


63700 


57800 


23 


63700 


57100 


72500 


73300 


70900 


68900 


78200 


82800 


79000 


72800 


63400 


57700 


24 


63400 


56900 


72700 


73100 


70600 


69300 


78700 


82800 


78800 


72700 


63000 


57600 


25 


63200 


56700 


72800 


74000 


70300 


69800 


79000 


82900 


78700 


72400 


62800 


57400 


26 


62800 


56400 


73900 


75200 


70100 


70200 


79400 


82900 


78400 


72200 


62400 


57400 


27 


62500 


56100 


74700 


75600 


69800 


70600 


79500 


82900 


78200 


72000 


62100 


57300 


28 


62100 


55900 


75600 


75900 


69500 


70900 


80000 


82900 


77900 


71800 


61700 


57200 


29 


62000 


55500 


77200 


75900 





71200 


80100 


82900 


77800 


71500 


61500 


57100 


30 


61700 


55400 


80900 


75700 





71700 


80400 


82900 


77500 


71200 


61100 


56900 


31 


61300 





82500 


75600 





72000 





82800 





70900 


60800 





lAX 


67800 


61100 


82500 


86800 


75500 


72000 


80400 


82900 


82600 


77400 


70600 


60600 


[IN 


61300 


55400 


54800 


73100 


69500 


66800 


72200 


80600 


77500 


70900 


60800 


56900 


a 


5024.2 


5019.6 


5039.3 


5034.6 


5034.4 


5032.1 


5037.9 


5039.5 


5035.9 


5031.4 


5023.8 


5020.8 


b 


-6800 


-5900 


1-27100 


-6900 


-6100 


*2500 


+ 8400 


♦ 2400 


-5300 


-6600 


-10100 


-3900 



CAL YR 1996 b +27800 
WTR YR 1997 b -11200 



a Elevation, in feet, at end of month, 
b change in contents, in acre-feet. 



SACRAMENTO RIVER BASIN 
11395030 SOUTH FORK FEATHER RIVER BELOW LITTLE GRASS VALLEY DAM, CA 



167 



LOCATION.-Lat 39°43'26", long 121°0n6", in SW 1/4 NW 1/4 sec.31, T.22 N„ R.9 E., Plumas County, Hydrologic Unit 18020123, Plumas 
National Forest, on left bank 0.1 mi downstream from Little Grass Valley Dam and 3.5 mi northwest of La Porte. 

DRAINAGE AREA.--25.9 mil 

PERIOD OF RECORD.-October 1927 to September 1933 (published as "near La Poite"), October 1960 to current year. 

REVISED RECORDS.--WSP 1931: Drainage area. 

GAGE.-Water-stage recorder. Datum of gage is 4,809.0 ft above sea level. Prior to Oct. 1 . 1 960, at site 0.4 mi upstream at different datum. Oct. 1 , 
1960, to Oct. 30, 1962, at present site and datum. Nov. 1, 1962, to May 31, 1966, at site on outlet works at base of Little Grass Valley Dam 
0.1 mi upstream at datum 4,850.00 ft above sea level. 

REMARKS. --Flow regulated by Linle Grass Valley Reservoir (station 1 1395020) beginning in October 1961 . No diversion upstream from station. 
See schematic diagram of South Fork Feather River basin. 

COOPERATION— Records provided by Oroville-Wyandotte Irrigation District, under general supervision of the U.S. Geological Survey, in 
connection with a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 7,370 ft^/s, Jan. 1, 1997, gage height, 14.80 ft; minimum daily, 0.2 ft'/s, 
Oct. 28-31, Nov. 2, 1961. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 

DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 



1 


116 


167 


166 


5420 


294 


196 




8.0 


13 


99 


98 


161 


161 


2 


116 


167 


165 


4920 


268 


196 




7.9 


13 


99 


98 


161 


161 


3 


116 


167 


165 


2660 


243 


196 




7.9 


13 


99 


98 


161 


105 


4 


116 


167 


166 


1480 


223 


195 




7.9 


13 


100 


98 


161 


49 


5 


lie 


167 


176 


925 


208 


196 




7.8 


13 


99 


98 


161 


49 


6 


116 


167 


168 


654 


197 


196 




7.6 


13 


99 


98 


161 


49 


7 


116 


167 


167 


510 


193 


196 




13 


13 


99 


98 


161 


49 


8 


67 


167 


167 


414 


193 


196 




8.7 


13 


99 


98 


160 


49 


9 


14 


167 


179 


337 


193 


196 




8.9 


13 


99 


98 


160 


49 


10 


14 


166 


185 


283 


193 


196 




8.6 


13 


99 


98 


160 


49 


11 


14 


166 


183 


242 


194 


106 




8.6 


13 


99 


98 


160 


49 


12 


14 


166 


178 


214 


194 


43 




8.6 


13 


99 


98 


160 


49 


13 


14 


166 


84 


197 


194 


43 




8.6 


13 


98 


98 


160 


49 


14 


14 


165 


22 


192 


194 


43 




8.6 


13 


98 


98 


160 


49 


15 


14 


165 


21 


192 


194 


44 




8.8 


13 


99 


98 


160 


49 


16 


98 


165 


21 


192 


194 


44 




9.2 


12 


98 


98 


160 


49 


17 


169 


167 


20 


191 


194 


45 




9.0 


12 


98 


98 


160 


49 


18 


169 


172 


20 


191 


195 


45 




9.7 


12 


98 


98 


160 


49 


19 


169 


171 


20 


191 


195 


45 




15 


12 


98 


98 


160 


49 


20 


168 


169 


20 


192 


195 


24 




12 


12 


98 


98 


160 


49 


21 


168 


167 


20 


191 


195 


9. 


1 


12 


12 


98 


98 


161 


49 


22 


168 


170 


20 


192 


195 


9. 


5 


11 


12 


98 


98 


161 


49 


23 


168 


167 


20 


192 


195 


9. 


,6 


12 


12 


98 


98 


160 


49 


24 


168 


167 


20 


191 


194 


9. 


.5 


11 


12 


98 


97 


161 


49 


25 


168 


166 


20 


196 


194 


9. 


.4 


10 


12 


98 


97 


161 


49 


26 


167 


166 


120 


210 


195 


9, 


.6 


9.9 


12 


98 


97 


161 


49 


27 


167 


166 


204 


294 


195 


9, 


.2 


9.8 


12 


98 


97 


161 


49 


28 


167 


165 


248 


370 


195 


8. 


.8 


9.7 


12 


98 


97 


161 


49 


29 


167 


165 


440 


380 





8, 


.5 


9.6 


12 


98 


97 


161 


49 


30 


167 


165 


1260 


354 





8. 


.3 


12 


59 


98 


133 


162 


49 


31 


167 




3510 


319 





8 


.2 





99 





161 


161 


■■■ 


TOTAL 


3592 


5005 


8175 


22486 


5706 


2540 


.7 


291.4 


521 


2954 


3130 


4978 


1750 


MEAN 


116 


167 


264 


725 


204 


82, 


.0 


9.71 


16.8 


98.5 


101 


161 


58.3 


MAX 


169 


172 


3510 


5420 


294 


196 


15 


99 


100 


161 


162 


161 


MIN 


14 


165 


20 


191 


193 


8 


.2 


7.6 


12 


98 


97 


160 


49 


AC -FT 


7120 


9930 


16220 


44600 


11320 


5040 


578 


1030 


5860 


6210 


9870 


3470 



168 



SACRAMENTO RIVER BASIN 
1 1395030 SOUTH FORK FEATHER RIVER BELOW LITTLE GRASS VALLEY DAM. CA— Continued 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1928 - 1933, BY WATER YEAR (WY) 

OCT NOV DEC JAN FEB MAR APR MAY JUN 



JUL 



AUG 



SEP 



MEAN 


2.56 


19.5 


47.6 


26.3 


45.2 


134 


181 


201 


78.8 


7.70 


1.74 


1.35 


MAX 


6.62 


94.5 


206 


51.3 


94.7 


386 


301 


384 


169 


13.7 


2.54 


1.72 


(WY) 


1932 


1928 


1930 


1928 


1930 


1928 


1930 


1932 


1933 


1932 


1932 


1930 


MIN 


1.43 


1.67 


2.65 


3.60 


3.55 


14.5 


106 


48.9 


13.8 


2.38 


1.06 


1.04 


(WY) 


1929 


1930 


1933 


1933 


1933 


1933 


1933 


1931 


1931 


1931 


1931 


1931 



SUMMARY STATISTICS 

ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC-FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



WATER YEARS 1928 - 1933 



62. 


.3 








85. 


.6 






1932 


28 


.0 






1931 


1800 




Mar 


25 


1928 




.90 


Aug 


25 


1931 




.90 


Sep 


1 


1931 


2600 




Mar 


26 


1928 


7, 


.00 


Mar 


26 


1928 


45140 










202 










10 










1. 


.4 









STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1963 - 1997, BY WATER YEAR (WY) 
OCT NOV DEC JAN FEB MAR APR MAY 



JUL 



AUG 



SEP 



MEAN 


99.0 


76.4 


74.3 


105 


106 


103 


77.5 


138 


92.8 


114 


145 


167 


MAX 


305 


404 


420 


725 


694 


586 


317 


489 


396 


350 


344 


389 


(WY) 


1970 


1982 


1982 


1997 


1986 


1995 


1989 


1995 


1983 


1983 


1968 


1984 


MIN 


13.0 


2.94 


4.01 


2.36 


2.25 


3.70 


4.31 


4.38 


3.99 


3.71 


7.43 


10.0 


(WY) 


1986 


1976 


1979 


1964 


1976 


1964 


1964 


1977 


1977 


1977 


1976 


1981 



SUMMARY STATISTICS 

ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC-FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1963 - 1997 



57874 






61129.1 










158 






167 






108 
2S0 

29.5 


1982 

1981 


3510 


Dec 


31 


5420 


Jan 


1 


5420 


Jan 1 1997 


12 


Jan 


3 


7.6 


Apr 


6 


1.4 


Jan 27 1964 


12 


Jan 


3 


7.9 


Mar 


31 


1.4 


Jan 27 1964 








7370 


Jan 


1 


7370 


Jan 1 1997 








14.80 


Jan 


1 


14.80 


Jan 1 1997 


114800 






121200 






78440 




254 






196 






251 




119 






99 






41 




14 






12 






5.1 





SACRAMENTO RIVER BASIN 
1 1395150 SOUTH FORK TUNNEL NEAR STRAWBERRY VALLEY, CA 



169 



LOCATION -Ut 39''38'55". long 120W00", in NW 1/4 SW 1/4 sec.29, T.21 N., R.8 E.. Plumas County, Hydrologic Unit 18020123, Plumas 
Nauonal Forest, 3.2 mi upstream from Rock Creek, and 5.8 mi north of Strawberry Valley. 

PERIOD OF RECORD.-October 1973 to current year. Records of daily discharge for November 1961 to September 1973 are in files of the U S 
Geological Survey. Monthly diversion used to adjust South Fork Feather River below diversion dam near Strawberry Valley (station 
1 1 395200) since October 1 96 1 . / / v 

GAGE.-Water-stage recorder. Datum of gage is sea level. 

REMARKS.-Tunnel diverts water from South Fork Feather River to Sly Creek Reservoir (station 1 1395400) for power development See 
schematic diagram of South Fork Feather River basin. 

COOPERATION.-Records provided by OrovUle-Wyandotte Irrigation District, under general supervision of the U.S. Geological Survey, in 
connection with a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OFRECORD.-Maximum daily discharge, 570ft^/s, Mar. 13, May 25-29, June 3, 1983; no flow many days in 1980-82 
Mar. 11-28, 1995 and Jan. 1-9, 1997. i ) < 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN V/U-UES 

DAY OCT NOV DEC JAN FEB MAR APR MAY 



JUN 



JUL 



1 


107 


175 


205 


.00 


441 


251 


41 


28 


107 


104 


161 


158 


2 


107 


175 


189 


.00 


398 


257 


39 


26 


107 


102 


160 


159 


3 


107 


174 


186 


.00 


362 


252 


34 


24 


109 


102 


160 


133 


4 


107 


173 


206 


.00 


339 


250 


28 


23 


117 


102 


160 


48 


5 


107 


171 


456 


.00 


315 


249 


26 


22 


109 


102 


160 


46 


6 


110 


172 


358 


.00 


296 


249 


25 


21 


107 


103 


161 


46 


7 


108 


171 


294 


.00 


285 


248 


27 


20 


106 


102 


161 


46 


e 


95 


170 


280 


.00 


278 


247 


26 


19 


105 


102 


161 


46 


9 


15 


170 


430 


.00 


272 


247 


28 


18 


109 


102 


160 


46 


10 


5.2 


169 


545 


224 


268 


247 


29 


18 


107 


101 


160 


46 


11 


4.6 


169 


526 


325 


236 


183 


25 


17 


106 


101 


161 


46 


12 


4.4 


168 


550 


298 


228 


78 


21 


16 


107 


101 


161 


46 


13 


4.4 


168 


479 


276 


243 


76 


20 


16 


108 


100 


160 


46 


14 


4,3 


169 


286 


267 


243 


76 


20 


15 


106 


101 


160 


47 


15 


2.7 


168 


199 


266 


255 


77 


19 


15 


106 


99 


160 


50 


16 


54 


169 


155 


261 


255 


91 


19 


14 


106 


99 


159 


46 


17 


174 


222 


124 


258 


260 


108 


19 


14 


105 


100 


159 


46 


18 


177 


283 


105 


255 


256 


104 


21 


13 


105 


100 


160 


47 


19 


174 


251 


91 


253 


245 


100 


66 


13 


105 


100 


160 


46 


20 


173 


243 


81 


254 


261 


88 


40 


13 


105 


100 


164 


46 


21 


173 


211 


84 


250 


254 


63 


47 


12 


105 


99 


162 


46 


22 


173 


263 


77 


277 


252 


62 


41 


12 


105 


98 


161 


46 


23 


172 


226 


71 


286 


250 


61 


59 


16 


104 


98 


161 


46 


24 


176 


206 


64 


272 


250 


56 


45 


17 


104 


99 


160 


46 


25 


174 


196 


61 


448 


257 


51 


38 


13 


104 


98 


160 


46 


26 


170 


190 


227 


561 


257 


48 


34 


12 


104 


99 


161 


46 


27 


170 


186 


518 


559 


257 


52 


31 


12 


104 


99 


161 


45 


28 


170 


184 


536 


560 


253 


51 


30 


11 


104 


98 


160 


45 


29 


182 


181 


544 


558 





47 


30 


11 


103 


98 


158 


45 


30 


176 


179 


454 


521 





44 


26 


33 


104 


122 


158 


46 


31 


173 





82 


478 





45 





108 


- — 


161 


158 


— 


TOTAL 


3549.6 


5752 


8463 


7707.00 


7766 


4058 


954 


622 


3183 


3192 


4968 


1697 


MEAN 


115 


192 


273 


249 


277 


131 


31.8 


20.1 


106 


103 


160 


56.6 


MAX 


182 


283 


550 


561 


441 


257 


66 


108 


117 


161 


164 


159 


MIN 


2.7 


168 


61 


.00 


228 


44 


19 


11 


103 


98 


158 


45 


AC -FT 


7040 


11410 


16790 


15290 


15400 


8050 


1890 


1230 


6310 


6330 


9850 


3370 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1974 - 1997, BY WATER YEAR (WY) 



MEAN 84.7 103 


108 


121 


138 


167 


140 




169 


106 


114 




127 


147 


MAX 176 377 


462 


381 


406 


454 


429 




520 


421 


363 




327 


390 


(WY) 1975 1982 


1982 


1974 


1996 


1983 


1989 




1993 


1983 


1983 




1983 


1978 


MIN 6.21 4.14 


3.36 


5.99 


8.49 


9.71 


8.68 




16.4 


7.22 


4.43 




4.03 


.000 


(WY) 1986 1977 


1977 


1977 


1977 


1977 


1977 




1977 


1977 


1977 




1981 


1981 


SUMMARY STATISTICS 


FOR 


1996 CALENDAR YEAR 




FOR 1997 


WATER YEAR 




WATER 


YEARS 1974 - 


1997 


ANNUAL TOTAL 




66944.6 






51911. 


.60 














ANNUAL MEAN 




183 






142 








127 








HIGHEST ANNUAL MEAN 


















294 






1983 


LOWEST ANNUAL MEAN 


















35. 







1977 


HIGHEST DAILY MEAN 




564 


May 22 




561 




Jan 2 6 




570 




Mar 13 


1983 


LOWEST DAILY MEAN 




2.7 


Oct 15 






00 


Jan 1 






00 


Jan 16 


1980 


ANNUAL SEVEN-DAY MINIMUM 




5.8 


Oct 9 






00 


Jan 1 






00 


Jan 16 


1980 


ANNUAL RUNOFF (AC -FT) 




132800 






103000 








91920 








10 PERCENT EXCEEDS 




393 






272 








315 








50 PERCENT EXCEEDS 




130 






107 








81 








90 PERCENT EXCEEDS 




82 






18 








8. 


2 







170 SACRAMENTO RIVER BASIN 

1 1 395200 SOUTH FORK FEATHER RIVER BELOW DIVERSION DAM, NEAR STRAWBERRY VALLEY. CA 

LOCATION.-Lat 39''38'51", long 121°07'04", in NE 1/4 SE 1/4 sec.30, T.21 N.. R.8 E.. Plumas County, Hydrologic Unit 18020123. Plumas 

National Forest, on left bank 0. 1 mi downstream from diversion dam. 3. 1 mi upstream from Rock Creek, and 5.8 mi north of Strawberry Valley. 
DRAINAGE AREA.--37.7 mi^. 
PERIOD OF RECORD.-October 1960 to current year. 
REVISED RECORDS.--WDR CA-80-4: 1976(M). 

GAGE.--Water-stage recorder and since May 8. 1987. sharp crested rectangular weir. Datum of gage is 3,535.02 ft above sea level (levels by 
Oroville-Wyandotte Irrigation District). 

REMARKS. -Flow regulated by Little Grass Valley Reservoir (station 11395020) since October 1961. South Fork Diversion Tunnel, maximum 
capacity, about 600 ft'/s 5(X) ft upstream, diverts to Sly Creek Reservoir (station 1 1395400); diversion began in November 1961 . See schematic 
diagram of South Fork Feather River basin. 

COOPERATION.-Records provided by Oroville-Wyandotte Irrigation District, under general supervision of the U.S. Geological Survey, in 
connection with a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 1 1,300 ft^/s, Jan. 1, 1997, gage height unknown, from computation of peak flow 
over diversion dam; minimum daily. 0.3 ft^/s, Dec. 25, 1962, to Jan. 2, 1963, Mar. 1-3, 1963. 

DISCHARGE, CUBIC FEET PER SECOND. WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN V/U-UES 

DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 



1 




8.0 


6.2 


9020 


48 


29 




7.4 




12 






11 


2 




6.0 


6.0 


7310 


48 


29 




7.4 




12 






11 


3 




6.0 


6.0 


3570 


48 


29 




12 




12 






11 


4 




6.0 


e6.0 


1980 


48 


29 




16 




12 






10 


5 




6.0 


33 


1290 


48 


29 




16 




12 






10 


6 




6.0 


e6.0 


897 


48 


29 




16 




12 






10 


7 




6.0 


e6.0 


693 


48 


29 




16 




12 






10 


8 




6.0 


e6.2 


563 


48 


29 




14 




12 






10 


9 




6.0 


19 


473 


48 


29 




13 




12 






10 


10 




6.0 


313 


202 


48 


29 




10 




12 






10 


11 




6.0 


235 


48 


48 


27 




e7.9 




11 






10 


12 




6.0 


105 


48 


48 


25 




7.7 




11 






10 


13 




6.0 


45 


48 


48 


25 




7.7 




11 






10 


14 




6.0 


e6.2 


48 


48 


25 




7.7 




11 






10 


15 




6.0 


e6.2 


48 


48 


25 




7.7 




11 






10 


16 




6.0 


g6.1 


48 


48 


25 




7.7 




11 






10 


17 




6.3 


e6.1 


48 


48 


25 




7.7 




11 






10 


18 




6.3 


e6.1 


48 


48 


25 




7.8 




11 






10 


19 




6.2 


ee.o 


48 


42 


25 




8.1 




11 






10 


20 




6.2 


e6.0 


48 


43 


24 




8.0 




11 






10 


21 




6.2 


e6.2 


49 


47 


20 




8.1 




11 






10 


22 




6.3 


ee.2 


50 


47 


21 




8.0 




11 






10 


23 




6.2 


6.2 


49 


47 


21 




8.2 




11 






10 


24 




6.1 


6.2 


49 


38 


21 




8.1 




11 






10 


25 




6.0 


6.2 


50 


29 


21 




8.0 




11 






10 


26 




6.0 


15 


106 


29 


21 




8.0 




11 






10 


27 




6.0 


15 


150 


29 


15 




8.0 




11 






10 


28 




6.0 


121 


118 


29 


9. 


2 


8.0 




11 






10 


29 


12 


6.0 


548 


73 





7. 


4 


8.0 




11 






10 


30 


12 


6.0 


2310 


48 





7. 


4 


9.9 




11 






10 


31 


12 





5490 


48 





7. 


4 














— 


TOTAL 


369 


183.8 


9365.1 


27268 


1244 


712. 


4 


288.1 


342 


340 


341 


341 


303 


MEAN 


11.9 


6.13 


302 


880 


44.4 


23. 





9.60 


11.0 


11.3 


11.0 


11.0 


10.1 


MAX 


19 


8.0 


5490 


9020 


48 


29 


16 


12 


12 






11 


MIN 


11 


6.0 


6.0 


48 


29 


7. 


4 


7.4 


11 


11 






10 


AC -FT 


732 


365 


18580 


54090 


2470 


1410 


571 


678 


674 


676 


676 


601 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1964 - 1997, BY WATER YEAR (WY) 



MEAN 10.2 13.8 


45.6 


88.5 


58.4 


52.2 


26.4 


43.3 




15 


.9 


9.55 


10.2 


10.5 


MAX 16.1 226 


808 


885 


1113 


741 


317 


417 




82 


.5 


13.3 


18.5 


18.8 


(WY) 1982 1982 


1965 


1970 


1986 


1995 


1982 


1995 




1983 


1968 


1973 


1973 


MIN 2.92 2.62 


2.41 


3.94 


2.73 


3.79 


3.68 


3.61 




2. 


20 


2.57 


3.32 


3.45 


(WY) 1978 1978 


1980 


1976 


1978 


1980 


1970 


1977 




1977 


1977 


1977 


1977 


StJMMARY STATISTICS 


FOR 


1996 CALENDAR YEAR 




FOR 1997 WATER YEAR 






WATER YEARS 1964 - 


1997 


ANNUAL TOTAL 




25022.7 






41097.4 
















ANNUAL MEAN 




68.4 






113 










32.0 






HIGHEST ANNUAL MEAN 




















120 




1995 


LOWEST ANNUAL MEAN 




















3.72 




1977 


HIGHEST DAILY MEAN 




5490 


Dec 31 




9020 


Jan 


1 






9020 


Jan 1 


1997 


LOWEST DAILY MEAN 




5.1 


Apr 26 




6.0 


Nov 


2 






.70 


Jan 18 


1968 


ANNUAL SEVEN-DAY MINIMUM 




5.2 


Apr 23 




6.0 


Nov 


2 






1.1 


Jan 18 


1968 


INSTANTANEOUS PEAK FLOW 










11300 


Jan 


1 






11300 


Jan 1 


1997 


INSTANTANEOUS PEAK STAGE 










unJcnown 


Jan 


1 






unjcnown 


Jan 1 


1997 


ANNUAL RUNOFF (AC-FT) 




49630 






81520 










23190 






10 PERCENT EXCEEDS 




14 






48 










12 






50 PERCENT EXCEEDS 




11 






11 










8.1 






90 PERCENT EXCEEDS 




5.8 






6.2 










4.3 







e Estimated. 



SACRAMENTO RIVER BASIN 171 

11 395400 SLY CREEK RESERVOIR NEAR STRAWBERRY VALLEY, CA 

LOCATION.--Lat 39°35'01", long 121°06'59", in NE 1/4 NE 1/4 sec.l9, T.20 N., R.8 E., Butte County, Hydrologic Unit 18020123, Plumas 
National Forest, on right bank 100 ft upstream from dam on Lost Creek, 1.4 mi northwest of Strawberry Valley. 

DRAINAGE AREA.-24.0 mi^. 

PERIOD OF RECORD.--November 1961 to current year (fragmentary prior to Mar. 14, 1962). 

GAGE.-Water-stage recorder. Datum of gage is sea level (levels by Oroville- Wyandotte Irrigation District). Prior to Sept. 30, 1966, water-stage 
recorder in valve chamber inside dam at same datum. Oct. 1, 1966, to December 1974, nonrecording gage read once daily. 

REMARKS. --Reservoir is formed by earthfill dam. Storage began in November 1961. Total capacity, 65,600 acre-ft between elevations 3,285 ft, 
invert of outlet, and 3,531 ft, top of spillway gate, all of which is available for release. Water is diverted into reservoir from South Fork Feather 
River through South Fork Diversion Tunnel and from North Yuba River basin through Slate Creek Tunnel (station 1 1413250). See schematic 
diagram of South Fork Feather River basin. Records represent total contents at 2400 hours. 

COOPERATION— Records provided by Oroville-Wyandotte Irrigation District, under general supervision of the U.S. Geological Survey, in 
connection with a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD.-Maximum contents, 65,600 acre-ft, June 22, 1978, elevation, 3,530.9 ft; minimum observed under 
normal operating conditions since reservoir fu-st filled, 860 acre-ft, Feb. 11, 1976, elevation, 3,320.0 ft. Reservoir completely drained for 
powerplant construction, Sept. 12 to Oct. 17, 1981. 

EXTREMES FOR CURRENT YEAR.-Maximum contents, 60,700 acre-ft, Jan. 1, elevation. 3,522.7 ft; minimum, 13,200 acre-ft, Sept. 7. 
elevation, 3,407.2 ft. 

Capacity table (elevation, in feet, and contents, in acre-feet) 
(Based on survey by Pacific Gas & Electric Co. in 1946) 
3,310 450 3,360 4,300 3,450 26,300 

3,315 655 3,380 7,360 3,480 38,500 

3,320 860 3,40 11,500 3,510 53,400 

3,340 2,150 3,420 16,600 3,531 65,600 



DAY 



RESERVOIR STORAGE (ACRE-FEET), WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 
DAILY OBSERVATION AT 2400 HOURS 

NOV DEC JAN FEB MAR APR MAY JUN JUL 



AUO 



SEP 



1 


22400 


27900 


42900 


60500 


56200 


46600 


45000 


53700 


53200 


49400 


30700 


18100 


2 


22600 


27700 


43500 


58600 


56700 


46500 


45200 


54200 


53600 


48900 


30200 


17400 


3 


22800 


27700 


43800 


57400 


56700 


46300 


45200 


54000 


53300 


48500 


29500 


16600 


4 


23000 


28000 


43800 


56600 


56700 


46200 


45300 


54400 


53300 


48300 


28800 


15600 


5 


23200 


28400 


46000 


55800 


56500 


46000 


45500 


54700 


53400 


48400 


28100 


14600 


6 


23400 


28700 


45400 


55100 


56300 


45600 


45500 


55100 


53200 


48200 


27500 


13800 


7 


23600 


29000 


46600 


54100 


56100 


45300 


45500 


55400 


52900 


48000 


26700 


13300 


8 


23600 


29400 


47100 


53100 


55800 


45200 


45800 


55100 


52800 


47400 


26400 


13400 


9 


23700 


29700 


48300 


52000 


55400 


44900 


46200 


54800 


52600 


46600 


26200 


13500 


10 


23700 


30100 


50600 


52000 


55100 


44600 


46600 


55100 


52900 


46500 


25800 


13600 


11 


23700 


30400 


52900 


52900 


54600 


44200 


46500 


55400 


52800 


45700 


25100 


13700 


12 


23800 


30700 


54700 


53800 


54100 


43600 


45900 


55700 


52400 


45100 


24300 


13800 


13 


23800 


31100 


55600 


54000 


53600 


43000 


45800 


56000 


52200 


44700 


23600 


13900 


14 


23800 


31400 


55800 


53100 


53000 


42500 


45600 


55800 


52500 


43900 


22900 


14100 


15 


23500 


31700 


55800 


52400 


52500 


42000 


45500 


55700 


52400 


43200 


22500 


14200 


16 


23400 


32100 


55400 


51600 


52000 


41600 


45200 


55300 


52200 


42300 


21800 


14300 


17 


23400 


32800 


55000 


50900 


51500 


41400 


45500 


55200 


51800 


41500 


21100 


14500 


18 


23700 


33700 


54500 


50400 


51100 


41400 


46000 


55100 


51600 


40700 


20500 


14600 


19 


23900 


34500 


53600 


49800 


50600 


41500 


47200 


54800 


51900 


40500 


20400 


14700 


20 


24200 


35400 


52400 


49400 


50000 


41500 


48000 


54400 


52000 


39900 


20700 


14800 


21 


24600 


36200 


51400 


49100 


49500 


41300 


49300 


54300 


51700 


39400 


21100 


14900 


22 


24900 


37600 


50300 


49300 


48800 


41900 


49200 


54400 


51400 


38500 


21300 


15000 


23 


25200 


38500 


49100 


49200 


48200 


42000 


50300 


54600 


51100 


37700 


21500 


15100 


21 


25500 


39300 


47900 


48500 


47600 


42200 


51100 


54300 


50900 


37100 


21800 


15200 


25 


25700 


39900 


47000 


49500 


47000 


42300 


51700 


54500 


50500 


36300 


21400 


15200 


26 


25900 


40500 


47100 


51500 


47000 


42700 


52300 


54700 


50300 


35400 


21300 


15300 


27 


26200 


40900 


48900 


53000 


47200 


43500 


52900 


54200 


49900 


34700 


21500 


15400 


28 


26500 


41400 


50700 


54200 


46900 


43800 


53100 


54100 


50100 


33700 


21300 


15500 


29 


26900 


41800 


53000 


54600 





44000 


53100 


53700 


49800 


33000 


20600 


15600 


30 


27200 


42300 


57200 


54800 





44300 


53200 


53300 


49500 


32200 


19700 


15700 


31 


27600 




58800 


55300 





44700 





53600 





31400 


18900 




MAX 


27600 


42300 


58800 


60500 


56700 


46600 


53200 


56000 


53600 


49400 


30700 


18100 


MIN 


22400 


27700 


42900 


48500 


46900 


41300 


45000 


53300 


49500 


31400 


18900 


13300 


a 


3453.4 


3488.1 


3519.5 


3513.5 


3497.5 


3493.0 


3509.5 


3510.3 


3502.6 


3463.2 


3427.8 


3416.6 


b 


+ 5400 


+14700 


+16500 


-3500 


-8400 


-2200 


+ 8500 


+ 400 


-4100 


-18100 


-12500 


-3200 


CAL YR 


1996 1 


37600 






















WTR YR 


1997 


-6500 























a Elevation, in feet, at end of month, 
b Change in contents, in acre-feet. 



172 



SACRAMENTO RIVER BASIN 
1 1395500 OROVILLE-WYANDOTTE CANAL NEAR CLIPPER MILLS, CA 



LOCATION.-Lat SQ'SS' 15". long 121°! TSl", in NW 1/4 NE 1/4 sec.33, T.20 N.. R.7 E.. Butte County. Hydrologic Unit 18020123. in concrete 
valve house at head of canal and 2.5 mi north of Clipper Mills. 

PERIOD OF RECORD. --October 1927 to September 1941 (published as Forbeslown Ditch). October 1953 to current year. Monthly discharge only 
for October 1953 to September 1961. published with records for Lost Creek near Clipper Mills. 

GAGE— Water-stage recorder and Parshall flume. Datum of gage is 3,166.0 ft above sea level (levels by Oroville-Wyandotte Irrigation District). 
Prior to Sept. 30, 1941. nonrecording gages and Oct. 1, 1941, to Nov. 16, 1962, water-stage recorder at sites at different datums 4 mi upstream 
in abandoned part of canal. 0.3 mi downstream from Lost Creek Dam. 

REMARKS— Water is discharged to canal through valve in Woodleaf Penstock. Prior to Nov. 16, 1962. canal diverted from Lost Creek Dam Water 
is used for irrigation and domestic supply. Demand for water reduced when a large lumber mill closed at Woodleaf in 1962. See schematic 
diagram of South Fork Feather River basin. 

COOPERATION— Records provided by Oroville-Wyandotte Irrigation District, under general supervision of the U.S. Geological Survey, in 

connection with a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD.-Maximum daily discharge. 43 ft^/s. Aug. 9 to Sept. 9, 1937, Aug. 13-15, 1977; no flow at times in 
many years. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 



1 


24 




2.4 


.00 


.00 


.00 


.00 


1.9 


9.9 


15 


21 


23 


24 


2 


23 




2.4 


.00 


.00 


.00 


.00 


.00 


14 


15 


22 


23 


24 


3 


23 




2.5 


.00 


.00 


.00 


.00 


.00 


14 


15 


22 


23 


24 


4 


23 




2.5 


.00 


.00 


.00 


.00 


.00 


14 


15 


22 


23 


24 


5 


23 




2.5 


.00 


.00 


.00 


.00 


.00 


14 


15 


22 


24 


24 


6 


23 




2.5 


.00 


.00 


.00 


.00 


.00 


14 


15 


22 


24 


24 


7 


23 




2.5 


.00 


.00 


.00 


.00 


.00 


14 


15 


22 


24 


24 


8 


23 




2.4 


.00 


.00 


.00 


.00 


.00 


14 


15 


22 


24 


24 


9 


23 




2.4 


.00 


.00 


.00 


.00 


.00 


14 


15 


22 


24 


24 


10 


23 




2.4 


.00 


.00 


.00 


.00 


.00 


15 


15 


22 


24 


24 


11 


24 




1.1 


.00 


.00 


.00 


.00 


.00 


15 


15 


22 


24 


24 


12 


24 




.00 


.00 


.00 


.00 


8.8 


.00 


16 


15 


22 


24 


24 


13 


24 




.00 


.00 


.00 


.00 


12 


.00 


16 


15 


22 


24 


24 


14 


24 




.00 


.00 


.00 


.00 


9.2 


.00 


15 


19 


22 


24 


24 


15 


14 




.00 


.00 


.00 


.00 


9.2 


5.8 


16 


19 


22 


24 


24 


16 


5, 


.8 


.00 


.00 


.00 


.00 


9.1 


8.7 


15 


19 


22 


24 


24 


17 


5, 


.8 


.00 


.00 


.00 


.00 


7.0 


8.7 


15 


19 


22 


24 


24 


18 


9. 


.6 


.00 


4.0 


.00 


.00 


5.7 


8.7 


15 


19 


22 


24 


24 


19 


12 




.00 


6.8 


.00 


.00 


5.7 


2.7 


16 


19 


22 


24 


24 


20 


12 




.00 


6.8 


.00 


.00 


5.7 


.00 


16 


19 


22 


24 


24 


21 


12 




.00 


6.8 


.00 


.00 


5.7 


.00 


16 


19 


22 


24 


8.5 


22 


10 




4.0 


6.8 


.00 


.00 


5.7 


.00 


15 


19 


22 


24 


.00 


23 


9. 


,6 


6.8 


3.2 


.00 


.00 


5.7 


.00 


15 


19 


22 


24 


.00 


24 


9. 


6 


6.8 


.00 


.00 


.00 


5.7 


.00 


15 


19 


23 


24 


13 


25 


9. 


7 


6.8 


.00 


.00 


.00 


5.7 


.00 


15 


19 


23 


24 


22 


26 


9. 


,7 


2.5 


.00 


.00 


.00 


5.7 


.00 


15 


19 


23 


24 


24 


27 


9. 


,7 


.00 


.00 


.00 


.00 


5.7 


.00 


15 


19 


23 


24 


24 


28 


9. 


,7 


.00 


.00 


.00 


.00 


5.7 


.00 


15 


19 


23 


24 


24 


29 


8. 


,7 


.00 


.00 


.00 


— 


5.7 


.00 


15 


19 


23 


24 


24 


30 


5, 


.2 


.00 


.00 


.00 


— 


5.7 


.00 


15 


19 


23 


24 


24 


31 


2. 


.4 


— 


.00 


.00 


— 


5.7 


— - 


15 





23 


24 


--- 


TOTAL 


482 


.5 


52.50 


34.40 


0.00 


0.00 


135.10 


36.50 


457.9 


518 


689 


740 


643.50 


MEAN 


15, 


.6 


1.75 


1.11 


.000 


.000 


4.36 


1.22 


14.8 


17.3 


22.2 


23.9 


21.5 


MAX 


24 


6.8 


6.8 


.00 


.00 


12 


8.7 


16 


19 


23 


24 


24 


MIN 


2, 


.4 


.00 


.00 


.00 


.00 


.00 


.00 


9.9 


15 


21 


23 


.00 


AC -FT 


957 


104 


68 


.00 


.00 


268 


72 


908 


1030 


1370 


1470 


1280 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1963 - 1997, BY WATER YEAR (WY) 



MEAN 12.8 5.80 


2.31 


1.38 


.81 


1.02 


1.87 




5.75 


12 


.3 


17.5 




20.7 




19.7 


MAX 20.2 16.5 


8.64 


6.89 


5.34 


6.70 


11.4 




20.2 


29 


.3 


26.4 




37.4 




30.9 


(WY) 1967 1968 


1977 


1968 


1977 


1964 


1977 




1977 


1963 


1976 




1977 




1977 


MIN 3.75 .84 


.000 


.000 


.000 


.000 


.000 




.000 


2.: 


31 


8.79 




9.47 




9.29 


(WY) 1990 1992 


1982 


1980 


1963 


1963 


1963 




1975 


1967 


1965 




1965 




1965 


SUMMARY STATISTICS 


FOR 


19 96 CALENDAR YEAR 




FOR 1997 


WATER YEAR 






WATER 


YEARS 196: 


1 - 


1997 


ANNUAL TOTAL 




2627.20 






3789, 


.40 


















ANNUAL MEAN 




7.18 






10, 


.4 








8, 


.54 








HIGHEST ANNUAL MEAN 




















16, 


,7 






1977 


LOWEST ANNUAL MEAN 




















4, 


,92 






1983 


HIGHEST DAILY MEAN 




29 


Aug 19 




24 




Oct 1 






43 




Aug 


13 


1977 


LOWEST DAILY MEAN 




.00 


Jan 1 






,00 


Nov 12 








.00 


Dec 


12 


1962 


ANNUAL SEVEN-DAY MINIMUM 




.00 


Jan 1 






00 


Nov 12 








00 


Dec 


15 


1962 


ANNUAL RUNOFF (AC-FT) 




5210 






7520 










6190 










10 PERCENT EXCEEDS 




23 






24 










22 










50 PERCENT EXCEEDS 




2.4 






8. 


7 








5, 


7 








90 PERCENT EXCEEDS 




.00 








00 










00 









SACRAMENTO RIVER BASIN 173 

1 1396000 LOST CREEK NEAR CLIPPER MILLS, CA 

LOCATION.-Lat 39''34'25", long 121''08'26", in SB 1/4 SW 1/4 sec.24, T.20 N.. R.7 E. Butte County, Hydrologic Unit 18020123, Plumas 

National Forest, on left bank 0.3 mi downstream from Lost Creek Reservoir and 2.8 mi north of Clipper Mills. 
DRAINAGE AREA.--30.0 mi^. 

PERIOD OF RECORD.-October 1927 to September 1941, October 1948 to current year. Records for Woodleaf Powerplant from February 1963 
to September 1966 in files of the U.S. Geological Survey. 

REVISED RECORDS.--WSP 1395: 1954. WSP 1931: Drainage area. 

GAGE.--Water-stage recorder. Sharp crested weir for low-water control since June 20, 1987. Elevation of gage is 3,170 ft above sea level, from 
topographic map. Prior to June 20, 1987, at site 100 ft downstream at same datum. 

REMARKS.-Flow regulated by Sly Creek Reservoir (station 11395400) 1.5 mi upstream and Lost Creek ReservoirO.3 mi upstream, usable 
capacity, 5,920 acre-ft with flashboards. Water is diverted into Sly Creek Reservoir through South Fork Diversion Tunnel from South Fork 
Feather River and through Slate Creek Tunnel (station 1 1413250) from North Yuba River basin. Woodleaf Tunnel divens from Lost Creek 
Reservoir to Woodleaf Powerplant. OrovUle-Wyandotte Canal (station 1 1 395500) diverts from Woodleaf Penstock for irrigation and domestic 
use Records represent seepage, release, and spill from Lost Creek Reservoir to Lost Creek. See schematic diagram of South Fork Feather River 
basin. 

COOPERATION.-Records provided by Oroville-Wyandotte Irrigation District, under general supervision of the U.S. Geological Survey, in 
connection with a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 5,760 ft^/s, Jan.l, 1997, gage height, 13.50 ft; no flow at times in some years. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



OCT 



NOV 



FEB 



APR 



JUL 



1 


6.0 


5.8 


3 


.8 


4490 


338 


e4.1 


7.0 


5.9 


5.9 


5.6 


6.1 


9.3 


2 


6.0 


5.8 


3 


.7 


4110 


473 


e4.1 


7.0 


5.9 


5.8 


5.7 


5.8 


9.3 


3 


6.0 


5.8 


3 


.7 


1940 


559 


e4.1 


e5.9 


6.0 


5.6 


6.3 


5.9 


9.3 


4 


5.9 


5.8 


4 


.0 


879 


548 


4.1 


e5.9 


6.3 


5.6 


8.0 


9.6 


9.3 


5 


5.8 


5.6 


5, 


.3 


539 


499 


4.1 


5.9 


6.1 


5.5 


6.6 


8.9 


8.5 


6 


5.8 


5.6 


4. 


.2 


424 


431 


4.1 


5.9 


6.1 


5.5 


5.5 


8.4 


7.2 


7 


5.8 


5.5 


4. 


,0 


394 


394 


4.1 


5.9 


6.1 


5.6 


5.5 


7.8 


6.7 


8 


5.8 


4.5 


3, 


,9 


380 


362 


4.1 


6.0 


6.1 


5.7 


5.5 


7.1 


6.7 


9 


5.8 


3.5 


5, 


.0 


373 


359 


4.1 


5.9 


6.1 


8.3 


5.5 


7.4 


6.7 


10 


5.8 


3.5 


293 




217 


355 


4.1 


5.7 


6.1 


8.1 


5.5 


8.1 


6.7 


11 


5.8 


3.5 


457 




e4.1 


345 


4.1 


5.7 


6.1 


5.5 


5.5 


8.2 


6.7 


12 


5.8 


3.5 


438 




e4.1 


336 


4.1 


5.8 


6.1 


5.6 


5.5 


8.2 


12 


13 


5.8 


3.5 


430 




e4.1 


331 


4.1 


5.9 


5.9 


7.2 


5.5 


8.2 


6.6 


14 


5.8 


3.5 


17 




339 


329 


4.1 


5.9 


5.9 


8.1 


5.5 


7.9 


6.6 


15 


5.8 


3.5 


4 


.4 


362 


326 


4.1 


5.9 


5.9 


5.5 


5.5 


8.0 


6.5 


16 


5.8 


3.6 


4 


.3 


355 


322 


4.2 


5.9 


5.9 


5.5 


6.1 


7.9 


6.5 


17 


5.8 


4.0 


4 


.2 


349 


322 


4.3 


5.9 


5.9 


5.5 


8.6 


7.9 


145 


18 


5.9 


4.0 


4 


,1 


343 


317 


4.1 


6.0 


5.9 


5.7 


11 


7.9 


218 


19 


5.7 


4.0 


75 




260 


316 


4.1 


6.0 


5.9 


5.6 


8.8 


7.7 


205 


20 


5.6 


3.9 


357 




287 


318 


4.1 


5.9 


5.9 


5.5 


6.2 


7.6 


190 


21 


5.6 


3.8 


374 




270 


315 


4.1 


5.9 


5.9 


5.5 


5.8 


7.4 


82 


22 


5.6 


4.1 


361 




450 


312 


4.1 


5.9 


5.9 


5.5 


5.7 


7.3 


7.4 


23 


5.6 


3.8 


353 




420 


308 


4.1 


5.9 


6.0 


5.6 


7.1 


6.8 


7.4 


24 


5.7 


3.7 


347 




385 


306 


4.1 


5.9 


5.9 


5.7 


6.4 


6.7 


7.4 


25 


5.8 


3.7 


342 




520 


301 


4.1 


5.8 


5.9 


5.7 


6.1 


7.9 


7.6 


26 


5.8 


3.7 


394 




610 


e9.4 


4.1 


5.7 


5.9 


5.7 


5.7 


12 


7.7 


27 


5.8 


3.7 


469 




496 


e5.3 


4.1 


5.7 


5.9 


5.7 


5.7 


11 


7.7 


28 


5.8 


3.7 


470 




469 


e4.1 


4.1 


5.8 


5.9 


5.7 


6.3 


9.0 


7.7 


29 


6.0 


3.6 


528 




440 





4.1 


5.9 


5.9 


5.6 


5.9 


9.5 


7.5 


30 


5.8 


3.6 


761 




376 





4.1 


5.9 


5.9 


5.6 


5.7 


9.5 


7.4 


31 


5.8 





2490 




414 





5.6 





5.9 





6.3 


9.3 


- — 


TOTAL 


179.8 


125.8 


9010. 


6 


20903.3 


9140.8 


128.9 


178.4 


185.1 


177.6 


194.6 


251.0 


1032.4 


MEAN 


5.80 


4.19 


291 


674 


326 


4.16 


5.95 


5.97 


5.92 


6.28 


8.10 


34.4 


MAX 


6.0 


5.8 


2490 


4490 


559 


5.6 


7.0 


6.3 


8.3 


11 


12 


218 


MIN 


5.6 


3.5 


3. 


7 


4.1 


4.1 


4.1 


5.7 


5.9 


5.5 


5.5 


5.8 


6.5 


AC -FT 


357 


250 


17870 


41460 


18130 


256 


354 


367 


352 


386 


498 


2050 


a 


1490 


2290 


28060 


26540 


29610 


28500 


9360 


8860 


12460 


23260 


24190 


7230 



e Estimated. 

a Diversion, acre-feet, through Woodleaf Powerplant (station 1 1 396090), provided by Oroville-Wyandotte Irrigation District. 



174 



SACRAMENTO RIVER BASIN 
1 1396000 LOST CREEK NEAR CLIPPER MILLS, CA— Continued 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1928 - 1961, BY WATER YEAR (WY) 

OCT NOV DEC JAN FEB MAR APR MAY JUN 



SEP 



MEAN 


3.78 


8.61 


66.0 


93.4 


170 


175 


191 


129 


29.9 


6.42 


4.23 


5.13 


MAX 


13.4 


121 


544 


485 


562 


467 


423 


441 


153 


34.7 


10.2 


15.3 


(WY) 


1928 


1951 


1956 


1956 


1958 


1938 


1938 


1952 


1952 


1952 


1961 


1960 


MIN 


.20 


.000 


.000 


.15 


.50 


25.7 


4.68 


1.21 


1.33 


.20 


.10 


.10 


(WY) 


1935 


1960 


1960 


1960 


1937 


1933 


1931 


1931 


1934 


1939 


1934 


1934 



SUMMARY STATISTICS 

ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC -FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 

a Site then In use. 



WATER YEARS 1928 - 1961 



73 


.0 








167 








1938 


6 


.78 






1931 


3840 




Dec 


22 


1955 




.00 


Jul 


30 


1940 




.00 


Nov 


1 


1959 


5000 




Dec 


22 


1955 


a6 


.90 


Dec 


22 


1955 


52890 










212 










8 


.4 
.30 









STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1962 - 1997, BY WATER YEAR (WY) 



MEAN 


13.0 


6.73 


34.6 


55.2 


65.1 


71.9 


56.6 


44.1 


32.7 


3.72 


3.18 


3.51 


MAX 


392 


179 


355 


674 


512 


573 


410 


454 


750 


16.0 


22.2 


34.4 


(WY) 


1963 


1963 


1982 


1997 


1986 


1983 


1993 


1995 


1995 


1962 


1966 


1997 


MIN 


.006 


.029 


.094 


.10 


.35 


.33 


.22 


.13 


.097 


.10 


.000 


.000 


(WY) 


1965 


1975 


1975 


1962 


1964 


1964 


1968 


1968 


1966 


1963 


1964 


1963 



SUMMARY STATISTICS 

ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC-FT) 
TOTAL DIVERSION (AC-FT) b 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1962 - 1997 



41960.1 






41508.3 










115 






114 






32.4 
200 
.49 


1995 
1964 


2490 


Dec 


31 


4490 


Jan 


1 


4490 


Jan 1 1997 


3.5 


Jan 


5 


3.5 


Nov 


9 


.00 


Oct 21 1961 


3.5 


Jan 


5 


3.5 


Nov 


9 


.00 


Oct 21 1961 








5760 


Jan 


1 


5760 


Jan 1 1997 








13.50 


Jan 


1 


13.50 


Jan 1 1997 


83230 






82330 






23440 




157500 






201900 










389 






362 






10 




5.7 






5.9 






1.4 




3.9 






4.1 






.14 





b Diversion, in acre-feet, through Woodleaf Powerplant, provided by Oroville-Wyandotte Irrigation District. 



SACRAMENTO RIVER BASIN 175 

1 1 396200 SOUTH FORK FEATHER RIVER BELOW FORBESTOWN DAM, CA 

LOCATION.--Ut inyOS", long 121°12'30", in SE 1/4 NE 1/4 sec.32, T.20 N., R.7 E., Butte County. Hydrologic Unit 18020123. Plumas 
National Forest, on right bank 500 ft downstream from Forbestown Dam, 0.4 mi upstream ft-om Oroleve Creek, and 4.0 mi northeast of 
Forbestown. 

DRAINAGE AREA.--87.5 mi^. 

PERIOD OF RECORD.--July 1962 to current year. Records for Forbestown Powerplant from February 1963 to September 1966 in files of the U.S. 
Geological Survey. 

GAGE.-Water-stage recorder. Elevation of gage is 1.690 ft above sea level, from topographic map. 

REMARKS .--Flow regulated by Little Grass Valley Reservoir (station 1 1 395020). Sly Creek Reservoir (station 1 1 395400). and smaller reservoirs. 
Water from North Yuba River basin is imported through Slate Creek Tunnel (station 1141 3250) to Sly Cieek Reservoir. Oroville-Wyandotte 
Canal (station 1 1 395500) diverts upstream from station. Tunnel 600 ft upstream from station diverts most flow through Forbestown Powerplant 
(station 1 1 396290) except fishwater releases and uncontrolled spill over Forbestown Dam. See schematic diagram of South Fork Feather River 
basin. 

COOPERATION.-Records provided by Oroville-Wyandotte Irrigation District, under general supervision of the U.S. Geological Survey, in 
connection with a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 2 1 .800 ft^/s, Jan. 1 . 1997. gage height, 17.64 ft, from rating curve extended above 
5,400 fr/s on basis of flow-over-dam measurement of peak flow; minimum daily, 0.6 ft'/s, Apr. 4, 1963. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 

DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 



1 


37 


38 


54 


17300 


430 




11 


11 


12 




11 


11 


2 


38 


336 


44 


14000 


513 




11 


11 


12 




11 


11 


3 


37 


167 


169 


6810 


606 




11 


11 


12 




11 


11 


4 


37 


148 


427 


3910 


589 




11 


11 


12 




11 


10 


5 


37 


178 


508 


2780 


518 




11 


11 


12 




11 


10 


6 


37 


202 


641 


2160 


464 




11 


11 


12 




11 


10 


7 


45 


137 


594 


1860 


395 




7.8 


11 


12 




11 


10 


8 


65 


125 


577 


1670 


377 




5.9 


11 


12 


12 


10 


11 


9 


36 


28 


653 


1530 


365 




6.1 


11 


12 


12 


10 


11 


10 


61 


28 


1490 


1140 


356 




6.1 


11 


12 


12 


11 


11 


11 


11 


31 


1440 


275 


349 




6.1 


11 


11 




11 


11 


12 


11 


28 


1330 


100 


338 




6.0 


11 


11 




11 


11 


13 


20 


28 


1160 


146 


330 




5.8 


11 


11 




11 


11 


14 


35 


28 


686 


432 


322 




5.9 


11 


11 




11 


11 


15 


164 


29 


598 


533 


316 




e6.1 


11 


11 




10 


10 


16 


147 


31 


573 


507 


309 




e5.2 


11 


11 




10 


10 


17 


189 


69 


562 


214 


311 




e5.4 


11 


11 




10 


28 


18 


247 


106 


550 


203 


301 




5.9 


12 


11 




10 


11 


19 


136 


74 


579 


136 


297 




5.9 


12 


11 




11 


11 


20 


36 


71 


849 


156 


283 




5.9 


11 


11 




11 


11 


21 


38 


51 


909 


178 


292 




5.9 


11 


11 




11 


11 


22 


11 


80 


908 


656 


289 




e5.9 


11 


11 




11 


11 


23 


25 


63 


891 


597 


283 




e5.9 


11 


11 




11 


11 


24 


19 


50 


869 


390 


279 




e5.9 


11 


11 




11 


11 


2S 


40 


45 


852 


885 


262 




e6.8 


11 


11 




10 


11 


26 


37 


65 


1020 


1730 


37 




5.9 


11 


11 




10 


11 


27 


36 


39 


1360 


1000 


12 




5.3 


12 


11 




10 


11 


28 


36 


38 


1390 


804 


11 




5.4 


11 


11 




11 


11 


29 


52 


37 


2000 


671 







5.2 


12 


11 




11 


11 


30 


50 


36 


4530 


534 







9.4 


11 


11 




10 


11 


31 


124 





10900 


535 










12 







11 





TOTAL 


1894 


2386 


39113 


63842 


9234 


421 


211.7 


346 


340 


344 


331 


341 


MEAN 


61.1 


79.5 


1262 


2059 


330 


13.6 


7.06 


11.2 


11.3 


11.1 


10.7 


11.4 


MAX 


247 


336 


10900 


17300 


606 


90 


11 


12 


12 


12 


11 


28 


MIN 


11 


28 


44 


100 


11 


10 


5.2 


11 


11 


11 


10 


10 


AC -FT 


3760 


4730 


77580 


126600 


18320 


835 


420 


686 


674 


682 


657 


676 


a 











20220 


36020 


31570 


10480 


9240 


13610 


24400 


25020 


8960 



e Estimated. 

a Diversion, in acre-feet, to Forbestown Powerplant (station 1 1396290). provided by Oroville-Wyandotte Irrigation District. 



176 



SACRAMENTO RIVER BASIN 



1 1396200 SOUTH FORK FEATHER RIVER BELOW FORBESTOWN DAM, CA— Continued 

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1962 - 1997, BY WATER YEAR (WY) 



OCT 



JUL 



MEAN 


29.8 


23.6 


104 


184 


177 


160 


105 


99.1 


30.8 


12.7 


11.1 


14.2 


MAX 


520 


240 


1262 


2059 


2000 


1472 


718 


990 


290 


37.1 


27.3 


120 


(WY) 


1963 


1982 


1997 


1997 


1986 


1995 


1982 


1996 


1995 


1962 


1986 


1996 


MIN 


4.21 


3.68 


3.37 


4.06 


4.46 


4.47 


4.06 


4.02 


2.90 


4.04 


3.37 


3.84 


(WY) 


1978 


1976 


1976 


1976 


1972 


1972 


1964 


1977 


1977 


1977 


1977 


1977 



SUMMARY STATISTICS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1962 - 1997 



ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC-FT) 
TOTAL DIVERSION (AC-FT) a 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



113869. 


,7 






118803.7 












311 








325 






78.8 
325 
4.36 




1997 
1977 


10900 




Dec 


31 


17300 


Jan 


1 


17300 


Jan 


1 1997 


5. 


3 


Jan 


2 


5.2 


Apr 


16 


.60 


Apr 


4 1963 


5. 


3 


Jan 


2 


5.7 


Apr 


16 


1.7 


Mar 


25 1980 










21800 


Jan 


1 


21800 


Jan 


1 1997 










17.64 


Jan 


1 


17.64 


Jan 


1 1997 


225900 








235600 






57110 






210300 








179500 












855 








601 






126 






45 








11 






10 






5. 


9 






10 






5.0 







a Diversion, in acre-feet, to Forbestown Powerplant (station 1 1396290), provided by Oroville-Wyandotte Irrigation District. 



SACRAMENTO RIVER BASIN 
1 1396310 MINERS RANCH CANAL BELOW PONDEROSA DAM, NEAR FORBESTOWN, CA 



177 



LOCATION.--Lat 39°33'00", long 12ri8'20", in SE 1/4 NW 1/4 sec.33. T.20 N., R.6 E., Butte County, Hydrologic Unit 18020123, on right bank 
800 ft downstream from Ponderosa Dam and 3 mi northwest of Forbestown. 

PERIOD OF RECORD.-October 1962 to cunent year. 

REVISED RECORDS.--WDR CA-88-4: diversion only, 

GAGE.-- Water-stage recorder and concrete control. Elevation of gage is 975 ft above sea level, ftom topographic map. 

REMARKS. -Canal diverts from South Fork Feather River at Ponderosa Dam. Water is used for power development and irrigation. See schematic 
diagram of South Fork Feather River basin. 

COOPERATION. -Records provided by Oroville-Wyandotte Irrigation District, under general supervision of the U.S. Geological Survey, in 
connection with a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD.-Maximum daily discharge, 314 ft^/s, May 13, 1984; no flow at times in most years. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 

DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 



1 




.00 


200 


.00 


169 


255 


264 


268 


220 




271 


278 


282 


278 


2 




.00 


189 


124 


133 


255 


264 


266 


220 




271 


278 


282 


279 


3 




.00 


201 


215 


224 


255 


264 


268 


220 




271 


278 


282 


279 


4 




.00 


199 


236 


245 


257 


264 


265 


205 




271 


278 


282 


279 


5 


54 




199 


262 


245 


257 


264 


268 


82 




271 


278 


282 


279 


6 


201 




195 


261 


250 


257 


264 


268 




00 


159 


278 


282 


279 


7 




.00 


192 


262 


259 


258 


265 


268 


94 




276 


279 


282 


221 


8 




.00 


148 


261 


260 


257 


268 


268 


207 




276 


281 


282 


16 


9 




.00 


.00 


262 


260 


258 


268 


268 


221 




276 


283 


282 


35 


10 




.00 


.00 


262 


223 


259 


268 


160 


221 




278 


282 


282 


38 


11 




.00 


.12 


262 


255 


261 


268 


269 


221 




200 


283 


282 


43 


12 




.00 


88 


259 


263 


261 


267 


269 


221 




280 


280 


282 


45 


13 


164 




.00 


255 


264 


261 


268 


269 


221 




280 


278 


282 


31 


14 


151 




.00 


252 


264 


261 


267 


269 


143 




280 


257 


283 


187 


15 


152 




.00 


252 


264 


261 


268 


272 


221 




280 


280 


244 


117 


16 


152 




.00 


253 


264 


261 


268 


251 


221 




280 


281 


283 


.00 


17 


151 




85 


258 


263 


261 


268 


221 


221 




280 


282 


283 


110 


18 


152 




216 


262 


261 


261 


268 


221 


221 




278 


282 


283 


205 


19 


152 




218 


261 


258 


261 


267 


221 


221 




276 


282 


230 


210 


20 


51 




107 


262 


257 


262 


262 


221 


221 




277 


282 


23 


210 


21 




.00 


.00 


262 


255 


264 


267 


221 


221 




279 


282 


96 


130 


22 




.00 


.00 


261 


237 


263 


267 


196 


221 




279 


282 


279 


16 


23 


14 




91 


259 


222 


264 


267 


199 


221 




279 


282 


147 


53 


24 




.00 


201 


258 


180 


264 


267 


181 


221 




279 


282 


26 


59 


25 


51 




68 


258 


201 


264 


269 


181 


221 




278 


282 


151 


181 


26 


152 




.00 


256 


201 


263 


272 


197 


221 




249 


282 


279 


142 


27 


152 




.00 


252 


214 


264 


269 


220 


221 




282 


282 


279 


30 


28 


116 




31 


250 


256 


230 


268 


220 


221 




282 


282 


279 


2.0 


29 




.00 


70 


251 


259 





271 


221 


244 




282 


282 


278 


.00 


30 


139 




3.3 


247 


259 





269 


220 


271 




281 


283 


279 


.00 


31 


164 







243 


257 





267 





271 







282 


279 





TOTAL 


2168 


.00 


2701.42 


7518.00 


7422 


7255 


8277 


7106 


6376. 


CO 


8101 


8683 


7667 


3754.00 


MEAN 


69.9 


90.0 


243 


239 


259 


267 


237 


206 


270 


280 


247 


125 


MAX 


201 


218 


262 


264 


264 


272 


272 


271 


282 


283 


283 


279 


MIN 




.00 


.00 


.00 


133 


230 


262 


160 




00 


159 


257 


23 


.00 


AC -FT 


4300 


5360 


14910 


14720 


14390 


16420 


14090 


12650 


16070 


17220 


15210 


7450 


a 


2750 


4640 


14240 


14480 


14050 


15590 


12970 


10710 


14320 


15340 


13260 


5840 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1963 - 1997, BY WATER YEAR (WY) 



MEAN 


172 


189 


195 


194 


209 


211 


207 


213 


232 


243 


243 


184 


MAX 


263 


269 


254 


257 


262 


267 


276 


276 


283 


284 


289 


270 


(WY) 


1980 


1992 


1981 


1986 


1996 


1997 


1987 


1992 


1992 


1996 


1986 


1980 


MIN 


26.6 


20.9 


18.1 


16.6 


10.5 


16.8 


14.5 


22.2 


51.9 


49.3 


43.0 


25.0 


(WY) 


1987 


1978 


1977 


1977 


1977 


1977 


1977 


1977 


1977 


1977 


1977 


1992 



SUMMARY STATISTICS 



FOR 199 6 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1963 - 1997 



ANNUAL TOTAL 


83978.42 






77028.42 












ANNUAL MEAN 


229 






211 






208 






HIGHEST ANNUAL MEAN 














256 




1996 


LOWEST ANNUAL MEAN 














52.2 




1977 


HIGHEST DAILY MEAN 


291 


Jul 


11 


283 


Jul 


9 


314 


May 13 


1984 


LOWEST DAILY MEAN 


.00 


Sep 


29 


.00 


Oct 


1 


.00 


Nov 21 


1962 


ANNUAL SEVEN-DAY MINIMUM 


7.7 


Sep 


29 


13 


Nov 


9 


.00 


Dec 6 


1976 


ANNUAL RUNOFF (AC -FT) 


166600 






152800 






150800 






10 PERCENT EXCEEDS 


286 






282 






276 






50 PERCENT EXCEEDS 


265 






258 






244 






90 PERCENT EXCEEDS 


81 






25 






46 







a Discharge, in acre-feet, through Kelly Ridge Powerplant (station 11396329), provided by Oroville-Wyandotte Irrigation District. 



178 



SACRAMENTO RTVER BASIN 
1 1396330 BANGOR CANAL BELOW MlhlERS RANCH RESERVOIR, NEAR OROVILLE, CA 



LOCATION.-Lat 39°30'I5", long 12r27'16", in NE 1/4 SW 1/4 sec.18. T.19 N., R.5 E., Butte County, Hydrologic Unit 18020124, on left bank 
400 ft downstream from outlet at Miners Ranch Dam and 5 mi east of Oroville. 

PERIOD OF RECORD.-January 1963 to current year. 

GAGE. -Water-stage recorder and Parshall flume. Elevation of gage is 815 ft above sea level, ftom topographic map. 

REMARKS. -Row regulated by Miners Ranch Reservoir, capacity, 912 acre-ft. Canal completed in November 1962. Water is used for irrigation. 
See schematic diagram of South Fork Feather River basin. 

COOPERATION. -Records provided by Oroville-Wyandotte Irrigation District, under general supervision of the U.S. Geological Survey, in 
connection with a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD.-Maximum daily discharge, 65 ft^/s, Aug. 17-20. 1963; no flow for several days in 1965, 1969. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 

DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 



1 


18 


11 


8.2 


3.7 


5.0 


6.2 


8.2 


15 


L8 


IB 


20 


19 


2 


18 


10 


8.1 


2.3 


5.0 


6.2 


8.0 


15 


18 


18 


20 


19 




18 


10 


8.2 


2.1 


5.0 


6.2 


8.0 


15 


18 


18 


19 


19 




18 


10 


8.0 


2.2 


4.9 


6.2 


8.1 


15 


L8 


IB 


19 


19 




18 


10 


8.0 


2.3 


4.8 


6.2 


8.3 


15 


18 


18 


19 


19 




19 


9.2 


8.2 


4.1 


4.8 


6.1 


8.7 


15 


18 


18 


19 


19 




18 


8.0 


8.2 


5.3 


4.8 


7.4 


8.5 


15 


LB 


19 


20 


19 


8 


18 


8.4 


8.2 


5.3 


5.2 


8.3 


8.5 


15 


LB 


19 


22 


19 


9 


18 


8.3 


8.2 


5.3 


5.5 


8.0 


8.5 


15 


LB 


18 


23 


19 


10 


18 


8.5 


7.1 


5.0 


5.5 


8.0 


8.4 


15 


L8 


19 


23 


19 


11 


18 


8.2 


6.2 


4.8 


5.5 


8.0 


8.4 


15 


L9 


19 


23 


19 


12 


18 


8.3 


6.2 


4.8 


5.5 


8.0 


8.4 


15 


L9 


19 


22 


19 


13 


19 


8.4 


6.2 


4.8 


5.5 


8.0 


8.5 


16 


L9 


19 


20 


19 


14 


19 


8.1 


6.2 


4.8 


5.5 


8.0 


9.1 


18 


L9 


18 


20 


19 


15 


18 


8.2 


6.2 


4.8 


5.5 


8.1 


13 


18 


L9 


19 


20 


19 


16 


17 


8.4 


6.2 


5.0 


5.5 


8.2 


15 


18 


LB 


19 


20 


19 


17 


15 


B.4 


6.2 


5.0 


5.5 


8.2 


15 


18 


LB 


19 


20 


19 


18 


15 


7.0 


6.2 


5.0 


6.2 


8.2 


15 


18 


LB 


20 


20 


20 


19 


15 


5.9 


6.2 


5.0 


7.2 


8.2 


15 


IB 


LB 


20 


19 


20 


20 


15 


5.8 


6.2 


5.0 


7.7 


8.2 


15 


18 


L9 


20 


19 


20 


21 


15 


6.1 


6.2 


5.0 


6.7 


8.2 


15 


18 


L9 


20 


19 


20 


22 


14 


6.1 


6.2 


4.7 


5.8 


8.2 


15 


18 


19 


20 


19 


19 


23 


12 


6.2 


6.2 


3.5 


6.2 


8.2 


15 


18 


19 


20 


19 


19 


24 


10 


6.2 


6.2 


3.4 


6.2 


8.2 


15 


18 


LB 


20 


19 


20 


25 


10 


7.2 


6.2 


3.1 


6.3 


8.2 


15 


18 


LB 


20 


19 


18 


26 


10 


8.1 


6.2 


3.3 


6.3 


8.2 


15 


18 


L9 


20 


19 


18 


27 


10 


8.0 


6.2 


3.1 


6.2 


8.2 


15 


18 


L9 


19 


19 


18 


28 


10 


8.0 


6.1 


3.5 


6.2 


8.2 


15 


18 


LB 


19 


19 


17 


29 


10 


8.1 


6.1 


4.1 





8.2 


15 


18 


LB 


19 


19 


18 


30 


10 


8.2 


3.7 


3.6 





8.2 


15 


18 


LB 


20 


19 


19 


31 


11 





2.3 


3.9 





8.2 





19 


-- 


20 


19 





TOTAL 


472 


242.3 


204.0 


127.8 


160.0 


240.1 


355.6 


521 5 


51 


592 


616 


569 


MEAN 


15.2 


e.OB 


6.58 


4.12 


5.71 


7.75 


11.9 


16.8 18 


4 


19.1 


19.9 


19.0 


MAX 


19 


11 


8.2 


5.3 


7.7 


8.3 


15 


19 


L9 


20 


23 


20 


MIN 


10 


5.8 


2.3 


2.1 


4.8 


6.1 


8.0 


15 


LB 


18 


19 


17 


AC -FT 


936 


481 


405 


253 


317 


476 


705 


1030 10< 


)0 


1170 


1220 


1130 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1963 - 1997, BY WATER YEAR (WY) 



MEAN 


16.9 


7.85 


5.39 


4.49 


4.11 


4.40 


8.70 


16.4 


22.2 


24.6 


24.7 


22.3 


MAX 


29.7 


14.3 


11.2 


12.0 


7.68 


8.27 


20.3 


27.8 


42.0 


56.4 


53.4 


36.2 


(WY) 


1965 


1972 


1975 


1963 


1980 


1988 


1970 


1970 


1963 


1963 


1963 


1963 


MIN 


5.42 


1.47 


.035 


.30 


.25 


.20 


2.65 


6.41 


11.7 


16.0 


17.1 


14.4 


(WY) 


1985 


1969 


1966 


1966 


1966 


1966 


1983 


1995 


1993 


1982 


1992 


1993 



SUMMARY STATISTICS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1963 - 1997 



ANNUAL TOTAL 


4379.4 






4650.8 










ANNUAL MEAN 


12.0 






12.7 




13.3 






HIGHEST ANNUAL MEAN 












18.0 




1977 


LOWEST ANNUAL MEAN 












8.95 




1993 


HIGHEST DAILY MEAN 


19 


Jul 


5 


23 


Aug 9 


65 


Aug 


17 1963 


LOWEST DAILY MEAN 


2.3 


Dec 


31 


2.1 


Jan 3 


.00 


Jan 


7 1965 


ANNUAL SEVEN-DAY MINIMUM 


4.1 


Feb 


4 


2.7 


Dec 30 


.00 


Jan 


7 1965 


ANNUAL RUNOFF (AC -FT) 


8690 






9220 




9650 






10 PERCENT EXCEEDS 


19 






19 




28 






50 PERCENT EXCEEDS 


10 






15 




11 






90 PERCENT EXCEEDS 


s.o 






5.0 




2.9 







SACRAMENTO RIVER BASIN 
1 1396395 SUCKER RUN AT KANAKA DIVERSION, NEAR FEATHER FALLS, CA 



179 



LOCATION.--Lat 39''33'44", long MI'l&'iS", in SE 1/4 NE 1/4 sec.27, T.20 N., R.6 E, Butte County, Hydrologic Unit 18020123, on left bank 
at Kanaka Diversion Measuring Weir, 2.5 mi upstream from confluence with South Fork Feather River, and 2.5 mi southwest of Feather Falls. 

DRAINAGE AREA.-- 15.5 mi^. 

PERIOD OF RECORD.-March 1989 to current year. 

GAGE. -Water-stage recorder and 120 degree V-notch weir. Elevation of gage is 1 ,660 ft above sea level, from topographic map. 

REMARKS. -Water from creek is diverted upstream from gage to Kanaka Powerplant (station 1 1396396). See schematic diagram of South Fork 
Feather River basin. See station 1 1 396397 for records of combined discharge of creek and powerplant. 

COOPERATION— Records provided by STS Hydro Power Ltd., under general supervision of the U.S. Geological Survey, in connection with a 
Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD. -Creek only, maximum discharge, 1,500 ft^/s, Jan. 1, 1997, gage height, 4.40 ft; minimum daily, 
1.2 ft^/s, Aug. 21, 22, 27, 1992, Aug. 13, 1994. 
Combined flow: Maximum discharge, 1,510 ft^/s, Jan. 1, 1997; minimum daily, 1.2 ft'/s, Aug 21, 22, 27, 1992, Aug. 13, 1994, 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAE.Y MEAN VALUES 



OCT 



NOV 



DEC 



JAN 



FEB 



MAR 



APR 



MAY 



JtIN 



JUL 



1 


5.5 


7.2 


5.5 


ellOO 


76.7 


13.5 


13.6 




10.2 


8.4 


ell 




6.5 


e5.7 


2 


5.6 


6.9 


5.2 


425 


70.6 


14.9 


13.6 




8.3 


8.4 


e9.8 




6.4 


e5.8 


3 


5.6 


6.8 


5.1 


179 


65.7 


13.4 


13.5 




8.5 


8.4 


e9.6 




6.4 


e5.9 


4 


5.5 


6.8 


5.4 


132 


49.7 


13.3 


13.5 




8.4 


8.6 


e9.2 




6.3 


e5.7 


5 


5.4 


6.8 


60.1 


101 


35.1 


13.2 


13.5 




8.3 


8.3 


e9.1 




6.3 


e5.6 


6 


5.3 


6.7 


8.8 


83.5 


30.7 


13.2 


13.4 




8.3 


8.3 


e9.0 




6.2 


e5.4 


7 


5.2 


6.6 


5.3 


59.1 


28.3 


13.3 


13.4 




8.3 


8.3 


e8.8 




6.1 


e5.3 


8 


5.1 


6.6 


5.1 


37.2 


26.0 


13.4 


16.1 




8.3 


8.4 


e8.6 




6.3 


e5.2 


9 


5.1 


5.6 


29.8 


31.7 


21.8 


13.2 


13.8 




8.2 


8.4 


e8.4 




5.9 


e5.2 


10 


5.1 


6.6 


154 


27.5 


18.9 


13.4 


13.7 




8.2 


8.4 


e8.3 




5.8 


e5.2 


11 


5.1 


6.6 


58.7 


24.2 


16.6 


13.5 


13.7 




8.2 


8.3 


ee.2 




6.1 


e5.2 


12 


5.2 


6.5 


51.3 


21.2 


14.9 


13.4 


13.6 




8.4 


8.3 


e8.1 




6.0 


e5.3 


13 


5.3 


6.5 


35.6 


25.2 


13.4 


13.5 


13.6 




8.5 


8.2 


e8.0 




5.8 


e5.3 


14 


5.3 


6.6 


8.0 


13.8 


14.0 


13.5 


13.6 




8.5 


8.2 


e7.9 




5.7 


e5.7 


15 


5.2 


6.7 


6.3 


13.9 


14.6 


13.5 


13.6 




8.5 


8.2 


e7.9 




5.6 


67.8 


16 


5.2 


7.0 


5.7 


11.2 


14.4 


15.2 


13.6 




8.5 


9.1 


e7.7 




5.5 


e6.0 


17 


5.2 


7.5 


5.5 


9.1 


14.7 


15.6 


13.6 




8.5 


9.2 


e7.7 




5.5 


e5.8 


18 


6.5 


14.1 


5.3 


8.1 


14.1 


13.7 


14.0 




8.5 


8.9 


e7.6 




5.6 


e5.9 


19 


6.4 


7.4 


5.3 


7.8 


14.0 


13.5 


14.8 




8.5 


9.3 


e7.6 




5.6 


e5.8 


20 


6.1 


5.5 


5.3 


11.8 


13.9 


13.4 


13.7 




8.5 


9.1 


7.5 




7.1 


e5.5 


21 


5.9 


5.8 


9.6 


33.5 


13.7 


13.7 


13.7 




8.5 


9.2 


7.4 




6.7 


e5.4 


22 


5.8 


6.3 


11.9 


198 


13.6 


13.8 


13.7 




8.5 


9.3 


7.2 




6.1 


e5.3 


23 


5.9 


5.6 


9.8 


172 


13.5 


13.7 


13.8 




8.5 


11.0 


7.1 




6.0 


e5.2 


24 


6.7 


5.5 


6.4 


112 


21.3 


13.7 


13.6 




8.5 


ell 


7.2 




6.1 


e5.1 


25 


6.9 


5.5 


5.3 


259 


13.5 


13.6 


14.1 




8.5 


ell 


7.1 




5.9 


e5.0 


26 


6.6 


5.3 


71.5 


329 


13.6 


13.6 


13.5 




8.4 


elO 


6.9 




5.8 


e5.0 


27 


6.2 


5.2 


142 


153 


13.6 


13.6 


13.6 




8.4 


elO 


6.9 




5.7 


eS.O 


28 


6.1 


5.1 


95.8 


130 


13.6 


13.6 


13.5 




8.4 


e9.9 


6.9 




5.6 


e4.9 


29 


10.6 


5.1 


157 


104 





13.6 


13.5 




8.4 


e9.7 


6.8 




5.6 


e4.8 


30 


11.9 


5.2 


269 


88.9 





13.6 


13.5 




8.4 


e9.6 


6.7 




e5.5 


e4.9 


31 


7.8 


--- 


353 


81.6 


--- 


13.7 







8.4 





6.6 




e5.5 





TOTAL 


189.3 


196.6 


1602.6 


3983.3 


684.5 


423.8 


412.4 




262.5 


271.4 


246.8 




185.2 


163.9 


MEAN 


6.11 


6.55 


51.7 


128 


24.4 


13.7 


13.7 




8.47 


9.05 


7.96 




5.97 


5.46 


MAX 


12 


14 


353 


1100 


77 


16 


16 




10 


11 


11 




7.1 


7.8 


MIN 


5.1 


5.1 


5.1 


7.8 


13 


13 


13 




8.2 


8.2 


6.6 




5.5 


4.8 


AC -FT 


375 


390 


3180 


7900 


1360 


841 


818 




521 


538 


490 




367 


325 


STATISTICS OF 


MONTHLY MEAN DATA 


FOR WATER YEARS 1989 


- 1997 


, BY WATER 


YEAR (WY) 












MEAN 


4.36 


5.17 


12.6 


37.6 


20.7 


26.3 


16.0 




13.6 


7.54 


6.29 




4.24 


3.72 


MAX 


7.19 


7.32 


51.7 


128 


40.2 


92.0 


37.5 




45.5 


9.05 


13.7 




8.09 


7.11 


(WY) 


1990 


1990 


1997 


1997 


1996 


1995 


1995 




1995 


1997 


1995 




1995 


1995 


MIN 


2.36 


3.44 


4.34 


4.44 


5.11 


12.1 


9.83 




6.40 


4.24 


2.85 




1.55 


1.33 


(WY) 


1995 


1993 


1991 


1991 


1991 


1994 


1994 




1992 


1992 


1994 




1994 


1992 


SUMMARY STATISTICS 


FOR 


1996 CALENDAR YEAR 




FOR 1997 


WATER YEAR 




WATER 


YEARS 1989 


1 - 1997 


ANNUAL 


TOTAL 






6262.3 






8622. 


3 














ANNUAL 


MEAN 






17.1 






23. 


6 






13. 


3 






HIGHEST ANNUAL MEAN 


















28. 


2 




1995 


LOWEST 


ANNUAL 


MEAN 


















6. 


29 




1992 


HIGHEST DAILY 


MEAN 




353 


Dec 31 




1100 




Jan 1 




1100 




Jan 


1 1997 


LOWEST 


DAILY MEAN 




5.0 


Jan 11 




4. 


8 


Sep 29 




1. 


2 


Aug 


21 1992 


ANNUAL 


SEVEN-DAY MINIMUM 




5.1 


Jan 8 




5. 





Sep 24 




1. 


3 


Aug 


21 1992 


INSTANTANEOUS 


PEAK FLOW 










1500 




Jan 1 




1500 




Jan 


1 1997 


INSTANTANEOUS 


PEAK STAGE 










4. 


40 


Jan 1 




4. 


40 


Jan 


1 1997 


ANNUAL 


RUNOFF 


(AC-FT) 




12420 






17100 








9610 








10 PERCENT EXCEEDS 




34 






31 








16 








50 PERCENT EXCEEDS 




8.5 






8. 


4 






6. 


8 






90 PERCENT EXCEEDS 




5.4 






5. 


3 






2. 


6 







e Estimated. 



180 



SACRAMENTO RIVER BASIN 

1 1396397 SUCKER RUN AT KANAKA DIVERSION, NEAR FEATHER FALLS. CA— Continued 

SUCKER RUN AND KANAKA HYDROELECTRIC PROJECT POWERPLANT, 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



NOV 



DEC 



JAN 



FEB 



MAR 



APR 



MAY 



JUN 



JUL 



1 


5.5 


7.2 


17 


elllO 


114 


36 


27 


21 


14 


ell 


6.5 


e5.7 


2 


5.6 


6.9 


13 


437 


108 


46 


26 


21 


14 


e9.8 


6.4 


e5.8 


3 


5.6 


6.8 


11 


189 


103 


39 


26 


20 


15 


e9.6 


6.4 


e5.9 


4 


5.5 


6.8 


13 


132 


87 


37 


25 


20 


22 


e9.2 


6.3 


e5.7 


5 


5.4 


6.8 


97 


101 


72 


35 


25 


20 


17 


e9.1 


6.3 


e5.6 


6 


5.3 


6.7 


37 


84 


68 


34 


24 


19 


16 


e9.0 


6.2 


e5.4 


7 


5.2 


6.6 


23 


76 


66 


34 


24 


19 


14 


e8.8 


6.1 


e5.3 


8 


5.1 


6.6 


19 


74 


63 


33 


27 


19 


14 


e8.6 


6.3 


e5.2 


9 


5.1 


6.6 


57 


69 


59 


32 


26 


19 


13 


e8.4 


5.9 


e5.2 


10 


5.1 


6.6 


179 


65 


56 


32 


25 


18 


13 


e8.3 


5.8 


e5.2 


11 


5.1 


6.6 


96 


61 


54 


32 


24 


18 


13 


e8.2 


6.1 


eS.2 


12 


5.2 


6.5 


89 


57 


52 


31 


24 


18 


13 


e8.1 


6.0 


e5.3 


13 


5.3 


6.5 


73 


58 


50 


31 


24 


18 


13 


eS.O 


5.8 


e5.3 


14 


5.3 


6.6 


42 


51 


49 


31 


23 


18 


13 


e7.9 


5.7 


e5.7 


15 


5.2 


6.7 


32 


51 


48 


31 


24 


17 


12 


e7.9 


5.6 


e7.8 


16 


5.2 


7.0 


27 


48 


47 


38 


23 


17 


12 


e7.7 


5.5 


e6.0 


17 


5.2 


21 


24 


46 


48 


43 


23 


17 


12 


e7.7 


5.5 


e5.8 


18 


6.5 


34 


23 


44 


45 


33 


24 


16 


11 


e7.6 


5.6 


e5.9 


19 


6.4 


25 


21 


43 


44 


32 


33 


16 


12 


e7.6 


5.6 


eS.S 


20 


6.1 


21 


21 


48 


43 


31 


26 


16 


11 


7.5 


7.1 


eS.S 


21 


5.9 


16 


42 


71 


42 


30 


24 


15 


11 


7.4 


6.7 


e5.4 


22 


5.8 


29 


47 


225 


41 


30 


24 


15 


11 


7.2 


6.1 


e5.3 


23 


5.9 


19 


45 


200 


40 


29 


27 


19 


11 


7.1 


6.0 


e5.2 


24 


6.7 


14 


35 


135 


39 


29 


24 


20 


ell 


7.2 


6.1 


eS.l 


25 


6.9 


11 


30 


277 


38 


28 


23 


17 


ell 


7.1 


5.9 


eS.O 


26 


6.6 


10 


98 


346 


38 


28 


22 


16 


elO 


6.9 


5.8 


eS.C 


27 


6.2 


9.0 


168 


185 


38 


27 


21 


16 


elO 


6.9 


5.7 


eS.O 


28 


6.1 


8.2 


133 


165 


37 


27 


22 


16 


e9.9 


6.9 


5.6 


e4.9 


29 


11 


8.1 


184 


141 





27 


22 


15 


e9.7 


6.8 


5.6 


e4.8 


30 


12 


8.0 


281 


126 





27 


21 


15 


e9.6 


6.7 


e5.5 


e4.9 


31 


7.8 





365 


119 





27 





14 





6.6 


e5.5 





TOTAL 


189.8 


340.8 


2342 


4834 


1589 


1000 


733 


545 


378.2 


246.8 


185.2 


163.9 


MEAN 


6.12 


11.4 


75.5 


156 


56.8 


32.3 


24.4 


17.6 


12.6 


7.96 


5.97 


5.46 


MAX 


12 


34 


365 


1110 


114 


46 


33 


21 


22 


11 


7.1 


7.8 


MIN 


5.1 


6.5 


11 


43 


37 


27 


21 


14 


9.6 


6.6 


5.5 


4.8 


AC -FT 


376 


676 


4650 


9590 


3150 


1980 


1450 


1080 


750 


490 


367 


325 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1989 - 1997, BY WATER YEAR (WY) 



MEAN 


4.36 


5.91 


18.7 


51.1 


36.1 


40.3 


27.2 


21.9 


12.3 


6.92 


4.41 


3.72 


MAX 


7.19 


11.4 


75.5 


156 


65.6 


113 


72.1 


71.3 


28.7 


16.5 


9.63 


7.11 


(WY) 


1990 


1997 


1997 


1997 


1996 


1995 


1995 


1995 


1995 


1995 


1995 


1995 


MIN 


2.36 


3 .44 


4.34 


4.52 


5.22 


14.3 


10.1 


6.40 


4.27 


2.85 


1.55 


1.33 


(WY) 


1995 


1993 


1991 


1991 


1991 


1994 


1994 


1992 


1992 


1994 


1994 


1992 



SUMMARY STATISTICS 

ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
ANNUAL RUNOFF (AC-FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1989 - 1997 



11017.5 






12547.7 








30.1 






34.4 




19.6 
41.5 
7.86 


1995 
1994 


365 


Dec 


31 


1110 


Jan 1 


1110 


Jan 1 1997 


5.1 


Oct 


8 


4.8 


Sep 29 


1.2 


Aug 21 1992 


5.2 


Oct 


6 


5.0 


Sep 24 


1.3 


Aug 21 1992 








1510 


Jan 1 


1510 


Jan 1 1997 


21850 






24890 




14170 




68 






68 




43 




20 






16 




7.8 




5.9 






5.5 




2.6 





e Estimated. 



SACRAMENTO RIVER BASIN 



181 



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Poe Forebay 

1,150 acre-feet 

Since 1958 






1 
-1 n 




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182 



SACRAMENTO RIVER BASIN 
11 399000 LAKE ALMANOR AT PRATTVILLE, CA 



LOCATION.--Ut 40°12'46". long 12r09'43". in SW 1/4 NE 1/4 sec.U. T.27 N., R.7 E., Plunias County, Hydrologic Unit 18020121. Lassen 

National Forest, at intake tower to Butt Valley Tunnel at Prattville, 4.7 mi northwest of Lake Almanor Dam, and S.6 mi northwest of 

Canyondam. 
DRAINAGE AREA.--491 mi^. 
PERIOD OF RECORD.--July 1913 to current year. Monthly contents only for some periods, published in WSP 1315-A. Published as "near 

Prattville" 1937-60. Prior to October 1964, records published as usable contents. 
REVISED RECORDS.-WSP 1 93 1 : Drainage area. 
GAGE.--Nonrecording gage read once daily. Datum of gage is 10.23 ft below sea level Gevels by Pacific Gas & Electric Co.). Prior to June 1. 1965, 

nonrecording gage at site 4.7 mi southeast at same datum. 
REMARKS. --Lake is formed by earthfiU dam; storage began in July 191 3; dam raised to gage height 4,455 ft in 1917 and 4,515 ft in 1927. Usable 

capacity, 1 ,174,887 acre-ft between gage heights 4,422 ft, inven of outlet, and 4,495.5 ft, maximum storage limit. Dead storage, 8,948 acre-ft. 

Water is diverted by tunnel and penstock to Butt Valley Powerplant (station 1 1400600) and then is used for power development in the North 

Fork Feather River. Figures given, including extremes, represent total contents at 2400 hours. See schematic diagram of North Fork Feather 

River basin. 
COOPERATION.-Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection 

with a Federal Energy Regulatory Commission project. Contents not rounded to U.S. Geological Survey standards. 
EXTREMES FOR PERIOD OF RECORD.-Maximum contents, 1,142,960 acre-ft. June 8, 1982, gage height, 4,494.00 ft; minimum, 5,230 acre-ft. 

Feb. 5, 1918, gage height, 4,416.1 ft. 
EXTREMES FOR CURRENT YEAR.-Maximum contents, 968,680 acre-ft, June 12, gage height, 4,487.39 ft; minimum, 793,925 acre-ft, Dec. 3, 

gage height, 4,480.28 ft. 

Capacity table (gage height, in feet, and contents, in acre-feet) 
(Based on surveys by Pacific Gas & Electric Co. in 1924 and 1926) 

4,460 
4,470 
4,480 



4,422 


8,948 


4,434 


49,510 


4,424 


10,067 


4,437 


74,189 


4,426 


11,260 


4,440 


101,869 


4,428 


13,480 


4,445 


156,414 


4,430 


21,200 


4,450 


220,848 


4,432 


34,173 


4,455 


94,531 



4,490 



376,686 

565,519 

787,304 

1,036,269 



4,495.5 1,183,835 



RESERVOIR STORAGE (ACRE-FEET), WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 
DAILY OBSERVATION AT 2400 HOURS 

NOV DEC JAN FEB MAR APR MAY JUN JUL 



1 


896296 


836695 


795109 


914941 


915939 


841039 


881245 


934236 


967405 


952412 


921189 


855092 


2 


894811 


834767 


794873 


943561 


915440 


841764 


883213 


935242 


967150 


951652 


920939 


854120 


3 


892832 


831878 


793925 


959260 


912696 


840314 


883952 


936753 


966640 


951146 


920688 


853148 


i 


891350 


830194 


796531 


965875 


910951 


838625 


884937 


938264 


966385 


949880 


917688 


853634 


5 


889868 


828511 


798429 


965875 


908211 


837901 


886662 


939776 


966130 


949121 


916689 


852177 


6 


888141 


826350 


799140 


965365 


906221 


836454 


887155 


941290 


965620 


948615 


914192 


850721 


7 


886662 


823471 


799615 


962819 


903984 


836213 


889128 


941542 


965875 


947856 


911449 


849024 


8 


884690 


821553 


800565 


960276 


901005 


837418 


890362 


943308 


965620 


946845 


908958 


847813 


9 


883213 


819159 


804843 


957737 


898773 


838142 


891844 


944823 


966640 


946087 


906469 


845875 


10 


880754 


818202 


812229 


955453 


896048 


838625 


892338 


946592 


967660 


945329 


904232 


843456 


11 


879034 


816289 


816289 


952665 


893574 


839590 


893080 


948615 


968170 


943813 


902990 


841281 


12 


876824 


814138 


818441 


950133 


891844 


840314 


894069 


950386 


968680 


943056 


901253 


839107 


13 


874616 


811990 


821074 


945076 


887648 


841522 


895553 


952159 


968170 


942046 


899269 


837177 


14 


872166 


809605 


822272 


940533 


885183 


842489 


896296 


953425 


967150 


941037 


897286 


836454 


15 


870208 


807223 


822752 


937257 


882475 


843456 


897286 


954946 


967150 


940029 


895306 


834767 


16 


868496 


805557 


822752 


934236 


880508 


847570 


898525 


955961 


966895 


939020 


892585 


832359 


17 


866053 


805557 


822752 


932727 


877315 


849509 


899764 


957229 


965875 


937508 


890362 


831396 


18 


865320 


805319 


822752 


928708 


874371 


851207 


902245 


958245 


965365 


937005 


888634 


829953 


19 


863125 


806985 


822752 


925697 


870942 


852905 


905723 


959260 


964601 


935746 


887401 


828031 


20 


859957 


806985 


822991 


923442 


867274 


854606 


908709 


960022 


963583 


934991 


884690 


827791 


21 


857280 


806509 


823711 


922190 


864344 


856793 


912945 


960531 


962565 


933733 


883213 


826590 


22 


854849 


807461 


825870 


924194 


860931 


859226 


916189 


960531 


961802 


932476 


880754 


825390 


23 


852905 


806985 


824670 


921940 


858739 


861418 


918438 


963074 


960531 


931470 


877806 


823711 


24 


852177 


806033 


823950 


920188 


854363 


863368 


921189 


964346 


959768 


930465 


875107 


822752 


25 


851207 


804843 


823471 


923192 


851207 


865809 


922941 


965111 


959006 


928959 


872411 


821314 


26 


848782 


803178 


828031 


922941 


847328 


868252 


925196 


965620 


957483 


928206 


869230 


819638 


27 


845875 


801752 


830194 


921689 


846844 


870698 


926951 


966385 


956468 


927202 


866297 


818680 


28 


842972 


799853 


834526 


921189 


843456 


872656 


929210 


966895 


954946 


926199 


863612 


816289 


29 


843456 


798429 


838142 


920438 





874862 


930214 


966895 


953425 


924945 


861418 


815572 


30 


841764 


797006 


850236 


918938 





877069 


932224 


966895 


953172 


923692 


858009 


813661 


31 


838866 





873391 


917938 





879279 





966895 





922440 


856307 






MAX 896296 836695 873391 965875 915939 879279 932224 966895 968680 952412 921189 855092 

MIN 838866 797006 793925 914941 843456 836213 881245 934236 953172 922440 856307 813661 

a 4482.16 4480.41 4483.58 4485.38 4482.35 4483.82 4485.95 4487.32 4486.78 4485.56 4482.88 4481.11 

b -58668 -41860 +76385 +44547 -74482 +35823 +52945 +34671 -13723 -30732 -66133 -42646 



CAL YR 1996 
WTR YR 1997 



MAX 1129715 MIN 793925 b -735 
MAX 968680 MIN 793925 b -83873 



a Gage height, in feet, at end of month, 
b Change in contents, in acre-feet. 



SACRAMENTO RIVER BASIN 
11399500 NORTH FORK FEATHER RIVER NEAR PRATTVILLE, CA 



183 



LOCATION.--Lal 40°10'06", long 12r05'3r', in NE 1/4 SW 1/4 sec.28, T.27 N., R.8 E., Plumas County, Hydrologic Unit 18020121, Plumas 
National Forest, on left bank 0.4 mi downstream from Almanor Dam, 4.5 mi southeast of Prattville, and 9 mi upstream from Bun Creek. 

DRAINAGE AREA.--493 mi^. 

PERIOD OF RECORD. --June 1905 to current year. Published as "below Prattville" prior to 1911. No record for January, February, or March 1911. 
Estimated mean discharge for water year 1911 published in WSP 1315-A. 



8-4: 1987 {monthly and yearly 



REVISED RECORDS.-WSP 1245: 1951 (yearly summaries). WSP 1285: 1952 (yearly summaries). WDR CA-1 
totals for Butt Valley Powerplant). 

GAGE. -Water-stage recorder and broad-crested weir. Datum of gage is 4,379.86 ft above sea level. Prior to Oct. 1, 1936, nonrecording gages or 
water-stage recorders at several sites within 0.5 mi of present site at various datums. 

REMARKS. -Flow regulated since 1913 by Lake Almanor (station 1 1399000) 0.5 mi upstream and since 1924 by Mountain Meadows Reservoir, 
capacity, 24,000 acre-ft, 1 2 mi upstream on Hamilton Branch. Water diverted from Lake Almanor to Butt Valley Reservoir (station 1 1 401 050) 
through old Almanor-Butt Creek Tunnel from May 1921 to December 1958, for use at Caribou Powerplant. Old tunnel closed Dec. 30, 1958, 
and diversion began Dec. 31, 1958, to Butt VaUey Powerplant (station 11400600) at upstream end of Butt Valley Reservoir. See schematic 
diagram of North Fork Feather River basin. 

COOPERATION— Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 10,000 ft^/s, Mar. 19, 1907, before construction of dam, gage height, 16.2 ft, at 
former site, from rating curve extended above 3,700 ft^/s; no flow at times during 1914, 1919, 1923. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



OCT 



NOV 



DEC 



JAN 



FEB 



MAR 



APR 



MAY 



JUN 



JUL 



1 


392 


692 


417 


322 


1930 


722 


35 


37 


36 


37 


37 


40 


2 


394 


683 


232 


458 


1940 


722 


37 


37 


36 


37 


37 


40 


3 


394 


680 


72 


1360 


1930 


705 


37 


37 


36 


37 


37 


40 


4 


393 


677 


62 


2120 


1930 


708 


37 


37 


37 


37 


37 


40 


5 


391 


676 


38 


2140 


1920 


694 


37 


37 


37 


37 


53 


40 


6 


391 


669 


38 


2130 


1920 


483 


37 


37 


37 


37 


586 


39 


7 


390 


661 


38 


2120 


1920 


60 


37 


37 


37 


37 


708 


39 


B 


389 


659 


38 


2110 


1910 


58 


37 


37 


37 


37 


706 


39 


9 


387 


547 


38 


2090 


1910 


58 


37 


37 


37 


37 


515 


39 


10 


396 


410 


39 


2080 


1900 


58 


37 


37 


37 


37 


366 


39 


11 


402 


510 


39 


2070 


1890 


49 


37 


37 


37 


38 


365 


39 


12 


402 


692 


39 


2060 


1870 


38 


37 


37 


37 


38 


364 


39 


13 


401 


692 


39 


2050 


1850 


38 


37 


37 


37 


37 


364 


39 


14 


399 


694 


39 


2030 


1840 


38 


37 


37 


37 


37 


363 


39 


15 


397 


686 


38 


2030 


1840 


38 


37 


37 


37 


37 


364 


39 


16 


395 


677 


38 


2020 


1820 


38 


37 


37 


37 


37 


362 


39 


17 


394 


675 


38 


2010 


1820 


38 


37 


37 


37 


37 


361 


39 


18 


337 


666 


38 


2010 


1820 


37 


37 


37 


37 


37 


360 


39 


19 


572 


420 


38 


2010 


1820 


37 


37 


37 


37 


37 


360 


39 


20 


706 


295 


38 


2010 


1810 


37 


37 


37 


37 


37 


359 


39 


21 


698 


293 


38 


2000 


1800 


37 


37 


37 


37 


37 


358 


39 


22 


694 


292 


38 


2000 


1790 


37 


37 


33 


37 


37 


463 


39 


23 


690 


292 


38 


2000 


1780 


37 


37 


17 


37 


37 


698 


39 


24 


683 


292 


38 


1980 


1760 


37 


37 


23 


38 


37 


695 


39 


25 


678 


365 


38 


1980 


1750 


36 


37 


22 


38 


37 


693 


39 


26 


676 


504 


39 


1970 


1740 


36 


37 


23 


36 


37 


691 


39 


27 


672 


500 


39 


1970 


1490 


36 


37 


23 


37 


37 


688 


38 


28 


669 


499 


39 


1960 


705 


36 


37 


23 


37 


37 


687 


38 


29 


667 


496 


41 


1950 





35 


37 


28 


37 


37 


684 


38 


30 


678 


495 


42 


1950 





35 


37 


37 


37 


37 


682 


38 


31 


697 


- — 


62 


1940 





35 





37 





37 


384 





TOTAL 


15824 


16389 


1848 


58930 


50405 


5053 


1108 


1043 


1108 


1149 


13427 


1171 


MEAN 


510 


546 


59.6 


1901 


1800 


163 


36.9 


33.6 


36.9 


37.1 


433 


39.0 


MAX 


706 


694 


417 


2140 


1940 


722 


37 


37 


38 


38 


708 


40 


MIN 


337 


292 


38 


322 


705 


35 


35 


17 


36 


37 


37 


38 


AC -FT 


31390 


32510 


3670 


116900 


99980 


10020 


2200 


2070 


2200 


2280 


26630 


2320 


a 


63520 


58420 


47420 


57820 


43260 


31980 


19450 


24650 


53920 


60660 


62810 


71180 



a Diversion, in acre-feet, to Butt Valley Powerplant, provided by Pacific Gas & Electric Co. 



184 



SACRAMENTO RIVER BASIN 
11 399500 NORTH FORK FEATHER RIVER NEAR PRATTVILLE. CA— Continued 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1925 - 1958, BY WATER YEAR (WY) 

OCT NOV DEC JAN FEB MAR APR MAY JUN 



AUG 



SEP 



MEAN 


498 


393 


371 


282 


349 


272 


318 


327 


349 


479 


602 


569 


MAX 


1607 


1414 


1418 


1489 


2124 


1609 


1852 


2206 


1065 


1280 


1755 


1762 


(WV) 


1931 


1931 


1938 


1946 


1938 


1929 


1938 


1938 


1935 


1929 


1929 


1929 


NIN 


3.80 


3.32 


3.41 


3.20 


3.20 


3.61 


2.63 


2.02 


2.11 


8.02 


3.72 


3.16 


(WY) 


1942 


1940 


1937 


1944 


1944 


1944 


1939 


1939 


1939 


1943 


1937 


1937 



SUMMARY STATISTICS 

ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC-FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



WATER YEARS 1925 - 1958 



401 








1061 






1929 


27.1 






1937 


2670 


May 


17 


1942 


.50 


Apr 


28 


1949 


.87 


Apr 


25 


1949 


2710 


May 


22 


1941 


6.95 


May 


22 


1941 


290600 








1060 








60 








4.4 









STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1960 - 1997, BY WATER YEAR (WY) 



MEAN 


47.8 


45.3 


32.9 


82.3 


80.8 


37.4 


42.2 


50.6 


69.7 


64.7 


60.9 


45,2 


MAX 


510 


546 


59.6 


1901 


1800 


163 


293 


352 


660 


688 


596 


415 


(WY) 


1997 


1997 


1997 


1997 


1997 


1997 


1983 


1996 


1996 


1996 


1996 


1996 


HIN 


17.3 


8.65 


7.47 


8.67 


10.0 


9.90 


10.1 


15.7 


16.0 


15.4 


14.9 


15.0 


(WY) 


1978 


1960 


1960 


1960 


1962 


1964 


1964 


1977 


1977 


1977 


1977 


1977 



SUMMARY STATISTICS 

ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC-FT) 
ANNUAL DIVERSION (AC-FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1960 - 1997 



121451 






167455 








332 






459 




54.8 
459 
22.3 


1997 
1962 


726 


May 


27 


2140 


Jan 5 


2140 


Jan 5 1997 


33 


Jan 


1 


17 


May 23 


2.9 


Jan 9 1960 


34 


Jan 


1 


23 


May 23 


4.7 


Oct 26 1966 








2160 


Jan 5 


10000 


Mar 19 1907 








6.67 


Jan 5 


16.20 


Mar 19 1907 


240900 






332100 




39710 




568000 






595100 








700 






1910 




40 




392 






39 




36 




36 






37 




32 





a Diversion, in acre-feet, to Butt Valley Powerplant, provided by Pacific Gas & Electric Co. 



SACRAMENTO RIVER BASIN 
1 1400500 BUTT CREEK BELOW ALMANOR-BUTT CREEK TUNNEL, NEAR PRATTVILLE, CA 



185 



LOCATION.-Lat 40°iri4", long 121''iri3", in NE 1/4 NW 1/4 sec.22. T.27 N.. R.7 E., Plumas County, Hydrologic Unit 18020121, on right 

bank 500 ft downstream from outlet of old Almanor-Butt Creek Tunnel, and 2.2 mi southwest of Prattville. 
DRAINAGE AREA.--69.3 mi^. 

PERIOD OF RECORD.-October 1936 to September 1959, October 1964 to current year. Published as "below tunnel No. 1 " 1938-40. Records for 
water years 1937-38 published in WSP 1515. Records prior to 1964 not equivalent owing to inflow from Almanor-Butt Creek Tunnel. 

GAGE.-Water-stage recorder and concrete control. Elevation of gage is 4,300 ft above sea level, from topographic map. Prior to Oct. 5, 1937, at 
site 200 ft downstream at datum 4 ft lower. 

REMARKS. -No regulation upstream from station. Howell-Bunger valve in conduit from Lake Almanor (station 1 1399000) to Butt Valley 
Powerplant (station 1 1400600) is opened for short periods several times a year, causing sharp peaks. Wallack Ditch upstream from station 
diverts about 3 ft^/s during each irrigation season into Yellow Creek basin. Some inflow 500 ft upstream that is the leakage from the abandoned 
Almanor-Butt Creek Tunnel at Outlet (station 1 1400200) is included in the table below. See schematic diagram of North Fork Feather River 
basin. 

COOPERATION.-Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD. -Maximum discharge, 4,080 ft^/s, Jan. 1, 1997, gage height, 6.22 ft, from rating curve extended above 
1,400 ft^/s; minimum daily, 26 ft-'/s, several days during May and June 1976. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



OCT 



NOV 



1 


52 


63 


87 


2660 


172 


104 


141 


124 


70 


60 


51 


48 


2 


51 


62 


72 


2440 


162 


110 


133 


117 


70 


57 


51 


47 


3 


51 


60 


69 


959 


152 


106 


130 


113 


70 


56 


51 


49 


4 


51 


59 


92 


584 


146 


103 


128 


109 


80 


55 


51 


48 


5 


51 


58 


334 


417 


139 


102 


123 


107 


73 


55 


50 


47 


6 


51 


57 


143 


315 


133 


103 


121 


104 


70 


55 


48 


47 


7 


51 


57 


116 


259 


130 


106 


119 


102 


69 


54 


48 


47 


8 


51 


57 


137 


221 


126 


107 


117 


101 


69 


54 


49 


47 


9 


51 


57 


250 


198 


123 


108 


115 


99 


70 


54 


49 


47 


10 


51 


57 


382 


181 


121 


113 


113 


99 


71 


54 


49 


47 


11 


52 


57 


279 


169 


118 


119 


111 


98 


68 


54 


49 


47 


12 


52 


57 


249 


156 


115 


118 


109 


97 


70 


53 


49 


48 


13 


52 


57 


249 


125 


111 


115 


109 


94 


74 


53 


49 


48 


14 


52 


57 


174 


123 


111 


119 


112 


92 


67 


53 


49 


50 


15 


53 


57 


143 


134 


112 


130 


111 


90 


64 


52 


49 


57 


16 


52 


57 


131 


130 


113 


149 


111 


89 


63 


52 


48 


50 


17 


53 


75 


122 


124 


119 


155 


111 


87 


63 


53 


48 


48 


18 


63 


195 


112 


119 


115 


147 


122 


86 


62 


52 


48 


51 


19 


62 


140 


107 


117 


115 


145 


205 


83 


56 


52 


48 


49 


20 


57 


121 


105 


112 


114 


148 


169 


81 


56 


52 


55 


48 


21 


57 


83 


106 


112 


111 


162 


203 


79 


55 


51 


51 


48 


22 


57 


128 


103 


107 


110 


168 


182 


76 


55 


52 


52 


48 


23 


57 


102 


99 


109 


108 


169 


194 


86 


56 


51 


50 


47 


24 


62 


83 


94 


107 


105 


170 


163 


87 


56 


51 


50 


47 


25 


64 


76 


93 


121 


106 


171 


149 


79 


55 


51 


49 


47 


26 


59 


71 


170 


225 


109 


172 


142 


76 


55 


51 


48 


47 


27 


58 


67 


221 


200 


111 


175 


139 


75 


55 


51 


48 


47 


28 


57 


67 


223 


210 


106 


166 


138 


74 


55 


52 


48 


47 


29 


64 


65 


339 


193 





156 


133 


74 


55 


53 


48 


47 


30 


65 


64 


555 


172 





152 


127 


72 


61 


52 


48 


47 


31 


64 


— - 


1220 


165 


— - 


153 





71 





51 


48 





TOTAL 


1723 


2267 


6576 


11264 


3413 


4221 


4080 


2821 


1913 


1646 


1529 


1442 


MEAN 


55.6 


75.6 


212 


363 


122 


136 


136 


91.0 


63.8 


53.1 


49.3 


48.1 


MAX 


65 


196 


1220 


2660 


172 


175 


205 


124 


80 


60 


55 


57 


MIN 


51 


57 


69 


107 


105 


102 


109 


71 


55 


51 


48 


47 


AC -FT 


3420 


4500 


13040 


22340 


6770 


8370 


8090 


5600 


3790 


3260 


3030 


2860 


a 


527 


494 


500 


497 


478 


530 


517 


541 


517 


529 


520 


493 



a Inflow, in acre-feet, from Almanor-Butt Creek Tunnel at Outlet, provided by Pacific Gas & Electric Co. 



186 



SACRAMENTO RIVER BASIN 



1 1400500 BUTT CREEK BELOW ALMANOR-BUTT CREEK TUNNEL, NEAR PRATTVILLE, CA— Continued 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1937 - 1997, BY WATER YEAR (WY) 
OCT NOV DEC JAN FEB MAR APR MAY 



JUN 



MEAN 


384 


355 


367 


310 


306 


339 


346 


383 


378 


401 


394 


390 


MAX 


995 


1073 


1419 


1098 


1025 


1050 


1178 


1176 


1092 


1038 


1019 


990 


(WY) 


1943 


1938 


1959 


1953 


1941 


1953 


1952 


1956 


1958 


1953 


1953 


1953 


MIN 


32.3 


39.2 


39.3 


39.4 


38.0 


47.8 


47.5 


42.7 


32.9 


28.7 


27.8 


29.4 


(WY) 


1989 


1992 


1991 


1992 


1937 


1977 


1977 


1976 


1976 


1977 


1977 


1992 



SUMMARY STATISTICS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1937 - 1997 



ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC -FT) 
ANNUAL INFLOW (AC -FT) a 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



48552 






42895 










133 






118 






363 
974 
40.1 


1953 
1977 


1220 


Dec 


31 


2660 


Jan 


1 


2830 


Feb 17 1986 


51 


Oct 


2 


47 


Sep 


2 


26 


May 26 1976 


51 


Oct 


2 


47 


Sep 


5 


26 


May 30 1976 








4080 


Jan 


1 


4080 


Jan 1 1997 








6.22 


Jan 


1 


6.22 


Jan 1 1997 


96300 






85080 






263000 




6670 






6140 










240 






170 






991 




85 






76 






103 




55 






49 






42 





a Inflow, in acre-feet, from Almanor-Butt Creek Tunnel at Outlet, provided by Pacific Gas & Electric Co. 



SACRAMENTO RIVER BASIN 
1 1401050 BUTT VALLEY RESERVOIR NEAR CARIBOU, CA 



187 



LOCATION.--Lat 40°06'59", long 121°08'42", in SE 1/4 SW 1/4 sec.l2, T.26 N., R.7 E., Plumas County, Hydrologic Unit 18020121, on center 
intake tower in Butt Valley Reservoir, 2.5 mi north of Caribou, and 5.4 mi southwest of Canyon Dam. 

DRAINAGE AREA.--83.5 mi^. 

PERIOD OF RECORD.-October 1985 to current year. Unpublished records for water years 1983-85 available in files of the U.S. Geological 
Survey. 

GAGE.-Water-stage recorder. Datum of gage is 10.23 ft below sea level (levels by Great Western Power Co.). 

REMARKS. --Lake is fonned by earthfiU dam. Storage began in 1924. Usable capacity, 49,930 acre-ft between elevations 4,075.9 ft, invert of outlet 
tunnel, and 4, 1 32. 1 ft, crest of spillway. Water is diverted by tunnel and penstock to Caribou Powerplants (station 1 1 401 1 10). Figures given, 
including extremes, represent total contents at 2400 hours. See schematic diagram of North Fork Feather River basin. 

COOPERATION.-Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. Contents not rounded to U.S. Geological Survey standards. 

EXTREMES FOR PERIOD OF RECORD.-Maximum contents, 52,667 acre-ft, Feb. 18, 19, 1986, elevation, 4,133.80 ft; minimum, 4,284 acre-ft. 
Mar. 3, 1997, elevation, 4,094.95 ft. 

EXTREMES FOR CURRENT YEAR.-Maximum contents, 24,062 acre-ft, Jan. 8, elevation, 4,1 14.50 ft; minimum, 4,284 acre-ft. Mar. 3, 
elevation, 4,094.95 ft. 

Capacity table (elevation, in feet, and contents, in acre-feet) 

(Based on surveys by Great Western Power Co. in 1923 and 1924) 

4,090 1,754 4,120 31,592 

4,100 8,024 4,130 46,591 

4,110 18,395 4,137 57,891 

RESERVOIR STORAGE (ACRE-FEET), WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 
DAILY OBSERVATION AT 2400 HOURS 

DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 



1 


4399 


4393 


4425 


14514 


11882 


4399 


4308 


4425 


4354 


4445 


4367 


4347 


2 


4399 


4399 


4438 


17389 


11402 


4451 


4360 


4406 


4367 


4393 


4360 


4354 


3 


4425 


4386 


4399 


17661 


10898 


4284 


4367 


4380 


4354 


4334 


4373 


4341 


i 


4451 


4425 


4634 


19694 


10445 


4347 


4367 


4341 


4412 


4347 


4373 


4328 


5 


4471 


4399 


4412 


20986 


9969 


4367 


4367 


4341 


4373 


4425 


4386 


4347 


6 


4471 


4412 


4386 


22088 


9543 


4380 


4393 


4314 


4296 


4399 


4393 


4744 


7 


4458 


4425 


4445 


22978 


9096 


4393 


4341 


4334 


4347 


4399 


4399 


4875 


8 


4458 


4451 


4373 


24062 


8634 


4399 


4380 


4367 


4386 


4399 


4367 


5008 


9 


4438 


4458 


4640 


23970 


8181 


4341 


4367 


4393 


4386 


4380 


4354 


5594 


10 


4419 


4458 


4640 


23340 


7709 


4386 


4354 


4406 


4328 


4367 


4341 


6199 


11 


4419 


4471 


4536 


22694 


7253 


4458 


4367 


4419 


4399 


4354 


4314 


7369 


12 


4445 


4412 


4399 


22088 


6825 


4432 


4373 


4406 


4341 


4341 


4360 


8199 


13 


4477 


4425 


4406 


21328 


6431 


4386 


4386 


4380 


4328 


4328 


4367 


8996 


14 


4451 


4425 


4334 


20773 


6058 


4373 


4360 


4406 


4314 


4328 


4354 


9836 


15 


4425 


4432 


4373 


20240 


5686 


4406 


4334 


4380 


4308 


4360 


4347 


10692 


16 


4412 


4412 


4432 


19744 


5399 


4425 


4308 


4438 


4360 


4373 


4347 


11462 


17 


4419 


4412 


4406 


19183 


5043 


4451 


4341 


4510 


4341 


4360 


4367 


11471 


18 


4458 


4425 


4393 


18614 


4399 


4334 


4425 


4406 


4341 


4386 


4373 


11521 


19 


4445 


4425 


4367 


18017 


4386 


4334 


4386 


4425 


4334 


4360 


4399 


12518 


20 


4458 


4334 


4432 


17448 


4360 


4341 


4412 


4334 


4360 


4328 


4380 


12497 


21 


4432 


4406 


4445 


16888 


4347 


4360 


4432 


4341 


4386 


4380 


4360 


12487 


22 


4412 


4432 


4386 


16553 


4341 


4386 


4347 


4373 


4393 


4406 


4321 


12528 


23 


4386 


4328 


4360 


15820 


4380 


4380 


4419 


4458 


4386 


4386 


4347 


12528 


24 


4425 


4321 


4399 


15606 


4380 


4367 


4373 


4438 


4386 


4360 


4341 


12528 


25 


4412 


4341 


4386 


15166 


4386 


4373 


4354 


4373 


4360 


4354 


4334 


12955 


26 


4425 


4328 


4490 


14842 


4406 


4425 


4360 


4334 


4321 


4373 


4334 


13945 


27 


4406 


4386 


4354 


14328 


4412 


4354 


4380 


4360 


4321 


4380 


4360 


14919 


28 


4425 


4412 


4302 


13890 


4406 


4341 


4393 


4328 


4321 


4354 


4393 


15876 


29 


4432 


4438 


4536 


13443 





4347 


4354 


4406 


4296 


4341 


4393 


17004 


30 


4399 


4432 


5064 


12912 





4347 


4412 


4419 


4373 


4354 


4380 


18111 


31 


4393 


--- 


7983 


12395 





4321 





4419 





4367 


4347 





MAX 


4477 


4471 


7983 


24062 


11882 


4458 


4432 


4510 


4412 


4445 


4399 


18111 


MIN 


4386 


4321 


4302 


12395 


4341 


4284 


4308 


4314 


4296 


4328 


4314 


4328 


a 


4095.12 


4095.18 


4099.95 4104.63 4095.14 


4095.01 


4095.15 


4095.16 


4095.09 


4095.08 


4095.05 


4109.76 


b 





+39 


+ 3551 


+ 4412 


-7989 


-85 


+ 91 


+ 7 


-46 


-6 


-20 


+13764 


c 


70000 


65710 


68830 


66590 


62580 


43350 


28290 


31320 


60330 


66530 


68230 


59930 


CAL 


YR 1996 


MAX 49131 


MIN 4302 


b -24821 


c 763300 














WTR 


YR 1997 


MAX 24062 


MIN 4284 


b +13718 


c 691700 















a Elevation, in feet, at end of month. 

b Change in contents, in acre-feet. 

c Discharge, in acre-feet, through Caribou Powerplants, provided by Pacific Gas & Electric Co. 



188 



SACRAMENTO RIVER BASIN 
1 1401 1 12 NORTH FORK FEATHER RIVER BELOW BELDEN DAM, CA 



LOCATION.-Lat 40°04' 17", long 12r09'49", in NE 1/4 NW 1/4 sec.35, T.26 N , R.7 E , Plumas County, Hydrologic Unit 18020121, Plumas 
National Forest, on left bank 0.4 mi downstream from Belden Dam. 5 mi upstream from Deadwood Canyon, and 6.4 mi northeast of Belden. 

DRAINAGE AREA.-612 mi". 

PERIOD OF RECORD.-October 1969 to current year. July 1959 to September 1969 in files of Pacific Gas & Electric Co. 

REVISED RECORDS.-WDR CA-78-4: 1977 (monthly and yearly summaries). 

GAGE. --Water-stage recorder. Datum of gage is 2,800.77 ft above sea level flevels by Pacific Gas & Electric Co.). 

REMARKS— Flow regulated by Butt Valley Reservoir (station 1 1401050), Lake Almanor (station 1 1399000), Belden Reservoir, and Mountain 
Meadows Reservoir, combined capacity, 1 ,267,000 acre-ft. Diversion to Belden Powerplant (station 1 1403050) began on Aug. 27, 1969. See 
schematic diagram of North Fork Feather River basin. 

COOPERATION— Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 3,460 ft^/s, Jan. 1, 1997, gage height, 9.17 ft; minimum daily, 2.3 ft^/s, Oct. 25, 

1981. 



DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



OCT 



MAR 



SEP 



1 


61 


63 


62 


1040 


803 


68 


66 


143 


142 


142 


143 


123 


2 


61 


63 


62 


337 


799 


65 


66 


143 


141 


142 


143 


67 


3 


61 


63 


63 


491 


779 


65 


66 


143 


138 


142 


144 


67 


4 


61 


63 


64 


1370 


757 


66 


65 


142 


142 


142 


143 


67 


5 


61 


63 


64 


1690 


743 


65 


66 


143 


145 


143 


143 


67 


6 


61 


63 


63 


2050 


725 


66 


66 


143 


146 


142 


143 


67 


7 


61 


63 


63 


2060 


711 


65 


65 


143 


145 


142 


143 


67 


8 


61 


63 


63 


1630 


702 


65 


65 


142 


145 


142 


143 


67 


9 


61 


63 


64 


1540 


689 


66 


66 


142 


145 


142 


144 


67 


10 


63 


63 


64 


1970 


682 


66 


66 


143 


144 


141 


142 


67 


11 


63 


63 


63 


1940 


668 


66 


66 


143 


145 


143 


143 


68 


12 


62 


63 


63 


1920 


654 


66 


66 


144 


145 


144 


143 


68 


13 


62 


63 


63 


2000 


629 


66 


65 


144 


144 


144 


143 


68 


14 


63 


62 


63 


2130 


533 


65 


66 


143 


144 


144 


143 


68 


15 


63 


62 


64 


1610 


612 


65 


66 


143 


142 


144 


143 


68 


16 


63 


62 


61 


1040 


599 


66 


66 


143 


139 


144 


143 


68 


17 


63 


62 


60 


968 


611 


66 


66 


144 


139 


144 


142 


68 


18 


63 


62 


65 


908 


606 


65 


66 


142 


140 


144 


143 


68 


19 


63 


62 


65 


803 


599 


65 


66 


143 


140 


144 


142 


67 


20 


63 


62 


65 


701 


589 


66 


66 


143 


139 


143 


143 


68 


21 


63 


62 


65 


712 


577 


66 


67 


144 


140 


145 


143 


68 


22 


63 


62 


65 


727 


576 


65 


67 


143 


140 


144 


142 


68 


23 


63 


62 


65 


714 


539 


66 


66 


142 


139 


143 


143 


68 


24 


63 


62 


67 


703 


524 


66 


108 


142 


141 


144 


143 


68 


25 


63 


62 


66 


774 


516 


66 


142 


143 


142 


144 


143 


68 


26 


63 


62 


67 


1050 


504 


66 


141 


143 


141 


143 


142 


68 


27 


63 


62 


68 


941 


434 


66 


141 


144 


140 


143 


142 


68 


28 


63 


62 


67 


891 


86 


65 


142 


144 


140 


143 


143 


68 


29 


63 


62 


68 


867 





66 


141 


141 


140 


143 


143 


68 


30 


63 


62 


69 


821 





66 


143 


141 


140 


143 


143 


68 


31 


63 


--- 


96 


808 


--- 


65 


--- 


143 





143 


142 





TOTAL 


1933 


1873 


2027 


37206 


17246 


2036 


2474 


4429 


4253 


4436 


4428 


2085 


MEAN 


62.4 


62.4 


65.4 


1200 


616 


65.7 


82.5 


143 


142 


143 


143 


69.5 


MAX 


63 


63 


96 


2130 


803 


68 


143 


144 


146 


145 


144 


123 


MIN 


61 


62 


60 


337 


86 


65 


65 


141 


138 


141 


142 


67 


AC -FT 


3830 


3720 


4020 


73800 


34210 


4040 


4910 


8780 


8440 


8800 


8780 


4140 


a 


95370 


93360 


72070 


133600 


121500 


54030 


30160 


27010 


52740 


58320 


84300 


58230 



a Diversion, in acre-feet, to Belden Powerplant, provided by Pacific Gas & Electric Co. 



SACRAMENTO RIVER BASIN 
11401 1 12 NORTH FORK FEATHER RIVER BELOW BELDEN DAM, CA— Continued 

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1970 - 1997, BY WATER YEAR (WY) 

OCT NOV DEC JAN FEB MAR APR MAY JUN C 



AUG 



189 



SEP 



MEAN 


137 


149 


127 


143 


115 


106 


165 


172 


147 


139 


135 


127 


MAX 


1414 


2487 


1664 


1200 


616 


591 


743 


549 


374 


199 


173 


1134 


(WY) 


1975 


1975 


1975 


1997 


1997 


1975 


1983 


1995 


1995 


1970 


1970 


1987 


MIN 


57.8 


38.4 


45.2 


51.6 


51.2 


50.0 


63.1 


62.2 


56.5 


64.2 


89.0 


61.9 


(WY) 


1985 


1981 


1976 


1976 


1976 


1976 


1972 


1971 


1971 


1971 


1972 


1976 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



SUMMARY STATISTICS 

ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC- FT) 
ANNUAL DIVERSION (AC-FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



a Diversion, in acre-feet, to Belden Powerplant, provided by Pacific Gas & Electric Co. 



WATER YEARS 1970 - 1997 



34795 






84426 








95.1 






231 




139 

745 
76.3 


1975 
1977 


243 


Mar 


12 


2130 


Jan 14 


2800 


Nov 20 1974 


60 


Sep 


7 


60 


Dec 17 


2.3 


Oct 25 1981 


61 


Sep 


5 


61 


Oct 1 


3.5 


Oct 25 1981 








3460 


Jan 1 


3460 


Jan 1 1997 








9.17 


Jan 1 


9.17 


Jan 1 1997 


69020 






167500 




100400 




997700 






880700 








143 






701 




ISO 




65 






139 




68 




62 






63 




60 





190 



SACRAMENTO RIVER BASIN 
1 1401 165 SOUTH BRANCH WARD CREEK BELOW DIVERSION DAM, NEAR GENESEE CA 



LOCATION --Ut 40°00'07", long 120''42'07", in SE 1/4 NE 1/4 sec.26. T.25 N., R.l 1 E., Plumas County. Hydrologic Unit 18020122, on left bank 
20 ft downstream from diversion dam, 30 ft downstream ft-om Nye Creek, 3.5 mi upstream from Indian Creek, and 3.8 mi southeast of Genesee. 
DRAINAGE AREA.--6.74 mi^. 
PERIOD OF RECORD.-October 1990 to current year (low flow records only). 

GAGE.--Water-stage recorder and V-notch shaip-crested weir in concrete control. Elevation of gage is 5,300 ft above sea level, from topographic 
map. 

REMARKS. --Feb. 10 to Mar. 5 missing due to equipment malfunction. No records computed above 12 ft^/s. Flow regulated at diversion dam 20 ft 
upstream. Some water is divened to Five Bears Powerplant and bypasses this gage. See schematic diagram of North Fork Feather River basin. 

COOPERATION.-Records were collected by Henwood Energy Services Inc., under general supervision of the U.S. Geological Survey, in 
connection with a Federal Energy Regulatory Commission project. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



DAY 



OCT 



NOV 



DEC 



JAN 



FEB 



MAR 



APR 



HAY 



JUN 



JUL 



SEP 



1 


3.7 


4.3 


3.0 





5.5 





11 





10 




3.2 


3.1 


2 


3.7 


4.2 


3.0 





5.5 





12 


12 


10 




3.1 


3.1 


3 


3.6 


4.3 


3.1 





5.5 





12 


12 


11 




3.1 


3.1 


4 


3.6 


4.2 


3.1 





5.5 







12 


11 




3.1 


3.1 


5 


3.6 


4.2 


5.5 





5.5 







12 


10 




3.1 


3.1 


6 


3.6 


4.2 


3.2 





5.4 


8.6 




12 


10 




3.1 


3.1 


7 


3.6 


4.2 


3.2 





5.4 


8.6 




12 


10 




3.1 


3.1 


8 


3.6 


4.2 


3.2 


12 


5.4 


8.6 




12 


11 




3.3 


3.1 


9 


3.6 


4.2 


3.7 


8.7 


5.4 


8.8 






11 




3.1 


3.1 


10 


3.7 


4.2 


3.7 


6.8 





9.3 






11 




3.1 


3.1 


11 


3.8 


4.2 


5.5 


5.7 





9.9 






10 




3.2 


3.1 


12 


3.8 


4.1 


9.1 


6.2 





10 






9.9 




3.1 


3.1 


13 


3.8 


4.1 


4.2 








10 






10 




3.1 


3.1 


14 


3.8 


4.2 


3.7 








10 






9.5 




3.1 


3.4 


IS 


3.8 


4.2 


3.5 


5.3 





11 






4.3 




3.1 


3.6 


16 


3.8 


4.2 


3.4 


5.3 




10 






3.2 




3.1 


3.1 


17 


4.0 


4.1 


3.3 


5.3 





10 






3.2 




3.2 


3.1 


18 


4.5 


6.3 


3.3 


5.3 





10 






3.2 




3.1 


3.1 


19 


4.3 


3.1 


3.2 


5.3 





19 


12 




3.2 




3.3 


3.1 


20 


4.2 


3.0 


3.2 


5.3 





11 







4.0 




3.7 


3.1 


21 


4.1 


3.0 


3.8 


5.3 





11 







3.4 




3.1 


3.1 


22 


4.2 


3.0 


3.7 


7.6 





11 







3.4 




3.1 


3.1 


23 


4.2 


3.0 


3.8 


12 





11 







3.1 




3.1 


3.1 


24 


4.5 


3.0 


3.2 


8.2 





11 







3.1 




3.1 


3.1 


25 


4.5 


3.0 


3.2 


11 





11 


12 




3.1 




3.1 


3.1 


26 


4.3 


3.0 


3.8 


8.5 


... 


11 


.*. 




3.1 




3.1 


3.2 


27 


4.2 


3.0 


3.7 


6.1 





11 







3.1 




3.1 


3.1 


28 


4.3 


3.0 


3.6 


5.5 





11 





10 


3.1 




3.1 


3.1 


29 


4.4 


3.0 


7.0 


5.5 





11 





10 


3.1 




3.1 


3.1 


30 


4.5 


3.0 





5.5 





11 


12 


10 


3.1 




3.1 


3.1 


31 


4.4 








5.5 





11 


— 


11 


... 




3.2 


... 


TOTAL 


123.7 


113.7 














... 


... 


197.1 


97.0 


97.5 


93.9 


MEAN 


3.99 


3.79 




















6.57 


3.13 


3.15 


3.13 


MAX 


4.5 


6.3 




















11 




3.7 


3.6 


HIN 


3.6 


3.0 




















3.1 




3.1 


3.1 


AC-FT 


245 


226 


— - 


- — 


— 


- — 


... 


— - 


391 


192 


193 


186 



SACRAMENTO RIVER BASIN 
1 1402000 SPANISH CREEK ABOVE BLACKHAWK CREEK, AT KEDDIE, CA 



191 



LOCATION.-Lat 40°00' II", long 1 20°57' 1 2", in SE 1/4 NE 1/4 sec.27, T.25 N, R.9 E., Plumas County, Hydrologic Unit 1 8020122, on right bank 
200 ft upstream from Blackhawk Creek and 0.9 mi southeast of Keddie. 

DRAINAGE AREA.-- 184 mil 

PERIOD OF RECORD.-October 1933 to current year. 

REVISED RECORDS.-WSP 1041: 1938(M). 

GAGE— Water-stage recorder. Datum of gage is 3,129.86 ft above sea level. 

REMARKS. -Records good. Low flow regulated by five small reservoirs having a combined capacity of 800 acre-ft. Approximately 4,600 acres 
irrigated upstream from station (from information provided by U.S. Forest Service). City of Quincy diverts about 450 acre-ft annually for 
municipal supply. See schematic diagram of North Fork Feather River basin. 

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 22,100 ft^/s, Jan. 2, 1997, gage height, 15.68 ft, from rating curve extended above 
5,200ft-'/sonbasisof slope-area measurement of peak flow; minimum daily, 3.0 ft'/s, Sept. 4, 5, 1988. 

EXTREMES FOR CURRENT YEAR.-Peak discharges greater than base discharge of 1,700 ft'/s, or maximum: 

Discharge Gage height Discharge Gage height 

Date Time (ft'/s) (ft) Date Time (ftVs) (ft) 

Dec. 10 0930 4,030 7.15 Jan. 26 0530 7,900 9.83 

Jan. 2 Unknown 22,100 al5.68 



a From floodmarks. 



DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 

NOV DEC JAN FEB MAR APR MAY JtJN JUL 



AUG 



SEP 



1 


41 


71 


98 


el2000 


1110 


283 


324 


282 


104 


66 


34 


35 


2 


46 


69 


100 


el8000 


1050 


334 


302 


264 


94 


63 


37 


34 


3 


52 


70 


90 


612500 


906 


312 


287 


252 


84 


58 


37 


37 


4 


50 


66 


88 


67500 


790 


288 


277 


251 


125 


60 


33 


36 


5 


49 


64 


869 


63800 


701 


276 


264 


245 


137 


56 


25 


37 


6 


43 


63 


451 


62500 


617 


271 


255 


237 


113 


51 


25 


26 


7 


42 


64 


284 


ellOO 


558 


267 


245 


239 


107 


51 


24 


32 


e 


35 


65 


350 


849 


520 


266 


242 


231 


101 


42 


29 


32 


9 


43 


65 


1060 


732 


468 


266 


266 


227 


113 


40 


29 


31 


10 


44 


64 


2860 


638 


435 


274 


248 


220 


115 


40 


28 


31 


11 


45 


64 


1990 


567 


412 


297 


234 


215 


115 


43 


30 


31 


12 


47 


63 


1540 


507 


395 


302 


225 


207 


99 


34 


34 


36 


13 


43 


62 


1050 


430 


374 


292 


221 


197 


104 


34 


24 


34 


14 


42 


62 


642 


399 


361 


287 


227 


187 


102 


39 


23 


37 


15 


39 


62 


434 


382 


355 


297 


231 


187 


93 


34 


19 


58 


16 


45 


61 


337 


365 


357 


380 


234 


182 


86 


36 


22 


48 


17 


49 


87 


274 


349 


421 


601 


246 


175 


80 


41 


29 


40 


IS 


60 


278 


226 


332 


415 


497 


266 


166 


73 


43 


24 


46 


19 


65 


311 


202 


319 


395 


439 


421 


158 


69 


44 


26 


43 


20 


59 


304 


190 


316 


386 


430 


395 


142 


65 


43 


39 


36 


21 


59 


153 


233 


345 


369 


474 


536 


137 


64 


38 


45 


44 


22 


60 


195 


222 


610 


355 


511 


472 


139 


62 


28 


37 


46 


23 


62 


202 


203 


735 


338 


524 


485 


160 


61 


27 


36 


40 


24 


59 


142 


187 


548 


320 


498 


402 


173 


58 


23 


36 


25 


25 


72 


119 


175 


2400 


308 


466 


354 


155 


54 


30 


40 


25 


26 


69 


104 


541 


5320 


306 


451 


336 


142 


54 


38 


37 


38 


27 


64 


96 


2180 


2640 


309 


462 


336 


132 


57 


41 


36 


44 


28 


58 


91 


2020 


2010 


298 


424 


332 


122 


51 


40 


33 


42 


29 


75 


86 


3380 


1690 





384 


323 


117 


57 


34 


31 


39 


30 


85 


81 


eSOlO 


1340 





360 


291 


110 


56 


33 


33 


36 


31 


76 





68820 


1140 





355 





103 





38 


33 





TOTAL 


1678 


3284 


36106 


82363 


13629 


11568 


9277 


5754 


2553 


1288 


968 


1119 


MEAN 


54.1 


109 


1165 


2657 


487 


373 


309 


186 


85.1 


41.5 


31.2 


37.3 


MAX 


85 


311 


8820 


18000 


1110 


601 


536 


282 


137 


66 


45 


58 


MIN 


35 


61 


88 


316 


298 


266 


221 


103 


51 


23 


19 


25 


AC -FT 


3330 


6510 


71620 


163400 


27030 


22950 


18400 


11410 


5060 


2550 


1920 


2220 


e Esti 


mated. 

























192 



SACRAMENTO RIVER BASIN 
1 1402000 SPANISH CREEK ABOVE BLACKHAWK CREEK. AT KEDDIE, CA— Continued 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1934 - 1997, BY WATER YEAR (WY) 

OCT NOV DEC JAN FEB MAR APR MAY JUN 



JUL 



AUG 



MEAN 


58.8 


131 


290 


442 


512 


563 


566 


429 


169 


51.7 


28.6 


30.5 


MAX 


702 


1015 


1498 


2657 


2843 


2043 


1715 


1301 


755 


187 


74.6 


63.8 


(WY) 


1963 


1982 


1956 


1997 


1986 


1995 


1952 


1938 


1983 


1983 


1983 


1983 


HIN 


18.4 


34.9 


35.3 


37.5 


50.5 


56.1 


44.3 


50.6 


18.6 


10.8 


5.10 


7.57 


(WY) 


1989 


1991 


1977 


1937 


1991 


1977 


1977 


1977 


1977 


1934 


1934 


1934 



SUMMARY STATISTICS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1934 - 1997 



ANNUAL TOTAL 




155758 






169587 
















ANNUAL MEAN 




426 






465 






271 










HIGHEST ANNUAL MEAN 














641 








1995 


LOWEST ANNUAL 


MEAN 














34. 


,1 






1977 


HIGHEST DAILY 


MEAN 


8820 


Dec 


31 


18000 


Jan 


2 


18000 




Jan 


2 


1997 


LOWEST DAILY MEAN 


25 


Aug 


23 


19 


Aug 


15 


3 


.0 


Sep 


4 


1988 


ANNUAL SEVEN-DAY MINIMUM 


31 


Aug 


18 


24 


Aug 


13 


4. 


4 


Aug 


18 


1934 


INSTANTANEOUS 


PEAK FLOW 








22100 


Jan 


2 


22100 




Jan 


2 


1997 


INSTANTANEOUS 


PEAK STAGE 








15.68 


Jan 


2 


15. 


68 


Jan 


2 


1997 


ANNUAL RUNOFF 


(AC-FT) 


308900 






336400 






196500 










10 PERCENT EXCEEDS 


939 






613 






644 










50 PERCENT EXCEEDS 


156 






125 






88 










90 PERCENT EXCEEDS 


40 






34 






24 











SACRAMENTO RIVER BASIN 
1 1403200 NORTH FORK FEATHER RIVER BELOW ROCK CREEK DIVERSION DAM, CA 



193 



LOCATION.--Ut 39°58'49", long 121°16'33", in SW 1/4 NW 1/4 sec.35, T.25 N., R.6 E„ Plumas County, Hydrologic Unit 18020121, Plumas 
National Forest, on left bank 0,7 mi downstream ft-om Rock Creek Diversion Dam and 5.0 mi northeast of Storrie. 

DRAINAGE AREA.-- 1,773 mi^. 

PERIOD OF RECORD.-October 1985 to February 1986, October 1986 to current year. Unpublished records for water years 1982-85 available in 
files of the U.S. Geological Survey. 

GAGE.-Water-stage recorder. Elevation of gage is 2,120 ft above sea level, fixim topographic map. 

REMARKS. -Low and medium flow regulated by Rock Creek Forebay 0.7 mi upstream. Most of the flow is diverted to Rock Creek Powerplant 
(station 1 1403800). Diversion to Rock Creek Powerplant began Feb. 28, 1950. See schematic diagram of North Fork Feather River basin. 

COOPERATION— Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 91,600 ft^/s, Jan. 2, 1997, gage height, 31.85 ft; minimum daily, 50 ft^/s, Feb. 7, 
1989. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



DAY 


OCT 


NOV 


DEC 


JAN 


FEB 


MAR 


APR 


MAY 


JUN 


JUL 


AUG 


SEP 


1 


112 


105 


64 


71800 


4600 


309 


168 


196 


213 


147 


117 


185 


2 


112 


88 


62 


74400 


4650 


501 


164 


195 


212 


144 


116 


99 


3 


112 


81 


62 


42100 


4090 


460 


189 


185 


189 


140 


108 


521 


4 


113 


72 


284 


23400 


3680 


329 


180 


189 


173 


140 


106 


663 


5 


112 


63 


337 


16500 


3260 


316 


169 


192 


171 


141 


148 


625 


6 


113 


63 


129 


13300 


2870 


217 


171 


196 


172 


149 


186 


680 


7 


113 


63 


72 


11100 


2640 


183 


173 


190 


167 


148 


198 


628 


8 


113 


63 


72 


9230 


2510 


187 


179 


193 


168 


145 


177 


416 


9 


112 


63 


1300 


8300 


2300 


185 


157 


193 


168 


123 


184 


168 


10 


112 


63 


6520 


8400 


2160 


178 


108 


196 


172 


125 


196 


328 


11 


112 


63 


2950 


6040 


2030 


182 


103 


208 


176 


122 


193 


577 


12 


113 


63 


1430 


4360 


1960 


187 


109 


206 


178 


124 


192 


510 


13 


113 


62 


847 


3670 


2120 


183 


106 


196 


170 


129 


187 


207 


14 


113 


63 


451 


3510 


1690 


173 


107 


145 


167 


125 


194 


226 


15 


114 


62 


125 


3140 


1730 


180 


106 


120 


169 


129 


193 


251 


16 


115 


62 


eSl 


2600 


1730 


183 


112 


150 


167 


133 


179 


242 


17 


114 


69 


e72 


2460 


1980 


551 


116 


151 


170 


140 


195 


269 


18 


113 


79 


e66 


2350 


2000 


554 


118 


149 


172 


141 


185 


253 


19 


113 


312 


65 


2190 


1910 


300 


119 


154 


168 


136 


186 


283 


20 


113 


78 


65 


2060 


1910 


394 


116 


144 


169 


136 


190 


139 


21 


113 


66 


67 


2120 


1820 


500 


365 


133 


169 


139 


188 


185 


22 


112 


69 


68 


2620 


1720 


780 


530 


140 


163 


138 


191 


172 


23 


112 


66 


67 


2740 


1630 


931 


487 


140 


159 


123 


196 


158 


24 


114 


65 


66 


3710 


1500 


930 


240 


154 


150 


124 


187 


155 


25 


113 


65 


65 


8890 


1400 


594 


216 


265 


177 


138 


188 


214 


26 


112 


63 


217 


18100 


1420 


505 


205 


269 


142 


120 


185 


261 


27 


112 


63 


4360 


14200 


1410 


634 


203 


260 


144 


123 


190 


253 


28 


112 


63 


5320 


11900 


471 


453 


201 


227 


139 


133 


191 


257 


29 


114 


63 


7290 


8250 





194 


202 


208 


139 


140 


186 


259 


30 


114 


63 


16300 


5370 





175 


183 


202 


142 


136 


188 


220 


31 


112 


- — 


44500 


4860 





177 





211 





122 


183 





TOTAL 


3497 


2283 


93374 


393670 


63191 


11625 


5602 


5757 


5035 


4153 


5503 


9'404 


MEAN 


113 


76.1 


3012 


12700 


2257 


375 


187 


186 


168 


134 


178 


313 


MAX 


115 


312 


44500 


74400 


4650 


931 


530 


269 


213 


149 


198 


680 


MIN 


112 


62 


62 


2060 


471 


173 


103 


120 


139 


120 


106 


99 


AC -FT 


6940 


4530 


185200 


780800 


125300 


23060 


11110 


11420 


9990 


8240 


10920 


18650 


a 


114300 


131500 


154900 


98140 


175400 


181400 


145700 


99790 


87320 


78980 


99270 


65750 



e Estimated. 

a Diversion, in acre-feet, to Rock Creek Powerplant, provided by Pacific Gas & Electric Co. 



194 



SACRAMENTO RIVER BASIN 
1 1403200 NORTH FORK FEATHER RIVER BELOW ROCK CREEK DIVERSION DAM. CA— Continued 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1987 - 1997, BY WATER YEAR (WY) 

OCT NOV DEC JAN FEB MAR APR MAY JUN 



AUG 



MEAN 


111 


79.4 


344 


144S 


653 


1543 


944 


981 


352 


113 


112 


123 


MAX 


175 


171 


3012 


12700 


3378 


8612 


5384 


7371 


2684 


163 


178 


313 


(WY) 


1987 


1989 


1997 


1997 


1996 


1995 


1995 


1995 


1995 


1995 


1997 


1997 


MIN 


52.7 


53.2 


52.4 


52.0 


52.9 


52.9 


54.2 


55.3 


55.7 


55.3 


53.0 


53.0 


(WY) 


1988 


1988 


1995 


1992 


1994 


1994 


1990 


1987 


1987 


1987 


1987 


1987 



SUMMARY STATISTICS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1987 



1997 



ANNUAL TOTAL 


420306 






603094 














ANNUAL MEAN 


1148 






1652 






568 








HIGHEST ANNUAL MEAN 














2333 






1995 


LOWEST ANNUAL MEAN 














77.7 






1988 


HIGHEST DAILY MEAN 


44500 


Dec 


31 


74400 


Jan 


2 


74400 


Jan 


2 


1997 


LOWEST DAILY MEAN 


58 


Jan 


8 


62 


Nov 


13 


50 


Feb 


7 


1989 


ANNUAL SEVEN-DAY MINIMUM 


59 


Jan 


6 


63 


Nov 


10 


51 


Dec 


22 


1993 


INSTANTANEOUS PEAK FLOW 








91600 


Jan 


2 


91600 


Jan 


2 


1997 


INSTANTANEOUS PEAK STAGE 








31.85 


Jan 


2 


31.85 


Jan 


2 


1997 


ANNUAL RUNOFF (AC -FT) 


833700 






1196000 






411700 








ANNUAL DIVERSION (AC-FT) a 


1807000 






1433000 














10 PERCENT EXCEEDS 


3240 






2790 






554 








50 PERCENT EXCEEDS 


115 






180 






106 








90 PERCENT EXCEEDS 


65 






72 






53 









a Diversion, in acre-feet, to Rock Creek Powerplant, provided by Pacific Gas & Electric Co. 



SACRAMENTO RIVER BASIN 
1 1403450 MILK RANCH CONDUIT AT OUTLET, NEAR BUCKS LODGE, CA 



195 



LOCATION.-Lat 39°54'09", long 12ri3'36", in SW 1/4 SW 1/4 sec.29. T.24 N., R.7 E., Plumas County, Hydrologic Unit 18020121, Plumas 
National Forest, on left bank 1 50 ft upstream from right abutment of Lower Bucks Lake Dam, 200 ft upstream from outlet, and 3.4 mi northwest 
of Bucks Lodge. 

PERIOD OF RECORD. --October 1986 to current year. Unpublished records for water years 1981-84 available in files of the U.S. Geological 
Siu^ey. 

GAGE. -Water-stage recorder in 3-ft steel pipe. Elevation of gage is 5,050 ft above sea level. 

REMARKS. "Conduit diverts from channel below Three Lakes Reservoir, capacity, 513 acre-ft, and from 12 additional diversions along the 
conduit. Water is used for power at Bucks Creek Powerplant (station 1 1403700) and Grizzly Powerplant (station 1 1404240). See schematic 
diagram of North Fork Feather River basin. 

COOPERATION. -Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection 

with a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD.-Maximum daily discharge, 71 ft^/s, Apr. 29, 1995, May 17, 1996; minimum daily, no flow Jan. 2 to 
Sept. 30, 1997. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



DAY 



NOV 



DEC 



JAN 



FEB 



MAR 



APR 



MAY 



JUN 



JUL 



AUG 



1 


6.5 


2.5 


13 


12 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


2 


6.2 


2.5 


12 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


3 


6.1 


2.3 


11 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


4 


6.0 


2.1 


13 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


5 


6.0 


1.9 


25 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


6 


5.8 


1.7 


14 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


7 


5.8 


1.6 


14 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


8 


5.5 


1.6 


21 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


9 


6.7 


1.6 


40 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


10 


7.8 


1.6 


47 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


11 


7.7 


1.6 


49 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


12 


7.6 


1.5 


48 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


13 


7.4 


1.7 


48 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


14 


7.1 


1.9 


32 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


15 


6.7 


1.8 


27 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


16 


6.1 


1.7 


25 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


17 


5.4 


8.2 


23 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


18 


5.1 


29 


21 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


19 


3.2 


24 


20 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


20 


1.8 


16 


20 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


21 


1.4 


14 


20 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


22 


1.2 


21 


19 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


23 


1.2 


14 


19 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


24 


2.2 


12 


18 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


25 


2.3 


12 


19 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


26 


1.9 


12 


33 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


27 


1.7 


12 


28 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


28 


1.5 


12 


30 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


29 


1.9 


11 


44 


.00 


— 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


30 


2.6 


11 


58 


.00 


— 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


31 


2.5 


— 


43 


.00 


— - 


.00 


— 


.00 


— 


.00 


.00 


— 


TOTAL 


140.9 


237.8 


854 


12.00 


0.00 


0.00 


0.00 


0.00 


0.00 


0.00 


0.00 


o'.oo 


MEAN 


4.55 


7.93 


27.5 


.39 


.000 


.000 


.000 


.000 


.000 


.000 


.000 


.000 


MAX 


7.8 


29 


58 


12 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


MIN 


1.2 


1.5 


11 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


AC -FT 


279 


472 


1690 


24 


.00 


.00 


.00 


.00 


.00 


.00 


.00 


.00 



196 



SACRAMENTO RIVER BASIN 
1 1403450 MILK RANCH CONDUIT AT OUTLET. NEAR BUCKS LODGE. CA— Continued 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1987 - 1997, BY WATER YEAR (WY) 
OCT NOV DEC JAN FEB MAR APR MAY 



MEAN 


3.57 


4.03 


7.32 


6.81 


10.6 


19.5 


31.7 


33.2 


16.9 


7.26 


3.51 


3.49 


MAX 


6.96 


8.15 


27.5 


19.2 


38.7 


42.7 


59.6 


66.6 


57.3 


30.5 


7.35 


6.82 


(WY) 


1994 


1990 


1997 


1995 


1996 


1989 


1989 


1993 


1993 


1995 


1992 


1990 


MIN 


.35 


.65 


1.19 


.39 


.000 


.000 


.000 


.000 


.000 


.000 


.000 


.000 


(WY) 


1989 


1988 


1991 


1997 


1997 


1997 


1997 


1997 


1997 


1997 


1997 


1997 



SUMMARY STATISTICS 

ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
ANNUAL RUNOFF (AC -FT) 
10 PERCENT EXCEEDS 
50 percent' EXCEEDS 
90 PERCENT EXCEEDS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1987 



7897. 


,57 






21. 


6 






71 




May 


17 




,74 


Sep 


3 




,76 


Aug 


29 


15660 








55 








14 








1, 


,5 







1244 


.70 






3 


.41 






58 




Dec 


30 




.00 


Jan 


2 




.00 


Jem 


2 


2470 








12 


.00 
.00 







12 


.3 








21 


.6 






1993 


3 


.41 






1997 


71 




Apr 


29 


1995 




.00 


Jan 


2 


1997 




.00 


Jan 


2 


1997 


130 










37 










5 


.8 

.49 









SACRAMENTO RIVER BASIN 197 

1 1403500 BUCKS LAKE NEAR BUCKS LODGE, CA 

LOCATION.-Lat 39°53'45", long 121°12'08", in SE 1/4 NW 1/4 sec.33, T.24 N., R.7 E., Plumas County, Hydrologic Unit 18020121, Plumas 
National Forest, in outlet structure 100 ft upstream from dam on Bucks Creek, 2.0 mi northwest of Bucks Lodge, and 15 mi west of Quincy. 

DRAINAGE AREA.--28.6 mil 

PERIOD OF RECORD.--1927-28 (year-end contents only, published in WSP 1315-A), October 1928 to current year. Prior to October 1954, 
published as Bucks Creek Reservoir near Bucks Ranch. 

GAGE.--Water-stage recorder. Datum of gage is 3.50 ft below sea level (levels by Feather River Power Co.). 

REMARKS. --Reservoir is formed by concrete-faced, rockfill dam, completed in 1927; storage began in May 1927. Capacity, 101,400 acre-ft 
between elevations 5,064.75 ft, sill of outlet gate, and 5, 1 54.85 ft, spillway crest. Storage of 274 acre-ft is not available for release. Released 
water flows down Bucks Creek to Lower Bucks Lake (station 1 1403520), where most of the water is diverted to Bucks Creek Tunnel or Grizzly 
Powerplant (station 1 1 304240), which discharges into Grizzly Creek. Figures given, including extremes, represent total contents at 2400 hours. 
See schematic diagram of North Fork Feather River basin. 

COOPERATION— Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. Contents not rounded to U.S. Geological Survey standards. 

EXTREMES FOR PERIOD OF RECORD.-Maximum contents, 107,278 acre-ft. May 17, 1996, elevation, 5,157.9 ft; minimum, 12,330 acre-ft, 
Feb. 27, 1929, elevation, 5,090.7 ft. 

EXTREMES FOR CURRENT YEAR.-Maximum contents, 103,759 acre-ft, Jan. 7, elevation, 5,156.0 ft; minimum, 52,984 acre-ft, Nov. 16, 
elevation, 5,125.3 ft. 

Capacity table (elevation, in feet, and contents, in acre-feet) 
(Based on survey by Feather River Power Co. in 1927) 



5,090 


11,742 


5,095 


16,183 


5,100 


21,180 


5,110 


32,519 


5,120 


45,472 



5,130 


59,997 


5,140 


75,894 


5,150 


92,950 


5,160 


111,220 



RESERVOIR STORAGE (ACRE-FEET), WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 
DAILY OBSERVATION AT 2400 HOURS 

NOV DEC JAN FEB MAR APR MAY JtJN JUL 



1 


69392 


58782 


54450 


94366 


103392 


95967 


98659 


101198 


99743 


101380 


97938 


90668 


2 


69392 


58328 


54007 


99563 


103209 


95967 


98297 


100651 


99924 


101562 


97400 


90668 


3 


68913 


57876 


53714 


101380 


103209 


95789 


98118 


100469 


100105 


101562 


97220 


90668 


4 


68434 


57576 


53714 


102476 


103209 


95433 


97759 


100287 


100469 


101562 


97041 


90319 


5 


67955 


57576 


54745 


103209 


102659 


95076 


97579 


100287 


100651 


101562 


96502 


89795 


e 


67478 


56675 


55040 


103576 


102293 


94720 


97400 


100105 


100651 


101562 


96324 


89273 


7 


67003 


56228 


55188 


103759 


102293 


94366 


97041 


99924 


100651 


101744 


95789 


88752 


8 


66844 


55930 


55188 


103576 


101926 


94189 


96861 


99743 


100833 


101744 


95611 


88232 


9 


66369 


55483 


56675 


103576 


101744 


94543 


96682 


99563 


101016 


101744 


95255 


87712 


10 


66053 


55040 


58934 


103576 


101380 


94720 


96342 


99382 


101016 


101744 


95255 


87367 


11 


65581 


54597 


60764 


103576 


101198 


94898 


95967 


99382 


101016 


101744 


95255 


86851 


12 


65109 


54155 


61839 


103392 


100833 


95076 


95789 


99201 


100833 


101744 


95255 


86334 


13 


64637 


53861 


62922 


103392 


100651 


95255 


95967 


99382 


100833 


101744 


95255 


85818 


14 


64169 


53861 


63233 


103392 


100287 


95433 


95967 


99563 


100833 


101744 


95255 


85475 


15 


63701 


53422 


63701 


103392 


100105 


95611 


95789 


99743 


100833 


101744 


95255 


85133 


16 


63545 


52984 


63857 


103209 


99743 


96146 


95967 


99382 


100833 


101744 


95255 


84619 


17 


63545 


53130 


63701 


103209 


99563 


96502 


95789 


99382 


100833 


101744 


95076 


84107 


18 


63701 


54007 


63701 


103209 


99382 


96682 


96324 


99743 


101016 


101380 


95076 


83597 


19 


63701 


55335 


64013 


102843 


99201 


97041 


97220 


99743 


101016 


101380 


94898 


83087 


20 


63389 


55781 


63857 


102476 


98839 


97220 


97938 


99743 


101016 


101380 


94898 


82747 


21 


63077 


56079 


63857 


102476 


98659 


97579 


98839 


99743 


101016 


101198 


94543 


82239 


22 


62613 


56526 


63857 


102659 


98297 


97938 


99201 


99743 


101198 


100651 


94189 


81733 


23 


62149 


56675 


63701 


102476 


97938 


98297 


99382 


99743 


101198 


100651 


93835 


81227 


24 


61994 


56377 


63389 


102293 


97579 


98659 


99382 


99924 


101198 


100105 


93658 


80721 


25 


61530 


56079 


63233 


103026 


97400 


99020 


99382 


100105 


101198 


99924 


93127 


80218 


26 


61070 


55930 


63857 


103576 


97041 


99382 


99743 


100287 


101380 


99743 


92598 


79716 


27 


60610 


55632 


64481 


103392 


96682 


99563 


99924 


100105 


101380 


99382 


92071 


79213 


28 


60150 


55188 


64952 


103209 


96502 


99563 


100469 


99743 


101380 


99201 


91544 


78714 


29 


59997 


54893 


66686 


103209 





99382 


100833 


99743 


101380 


98659 


91368 


78381 


30 


59541 


54597 


71649 


103392 





99201 


100833 


99743 


101380 


98659 


90668 


77881 


31 


59086 


--- 


79716 


103392 


--- 


99020 





99563 





98478 


90668 





MAX 


69392 


58782 


79716 


103759 


103392 


99563 


100833 


101198 


101380 


101744 


97938 


90668 


MIN 


59086 


52984 


53714 


94366 


96502 


94189 


95789 


99201 


99743 


98478 


90668 


77881 


a 


5129.40 


5126.40 5142.30 


5155.80 


5152.00 


5153.40 


5154.40 


5153.70 


5154.70 


5153.10 


5148.70 


5141.20 


b 


-10628 


-4489 


+25119 


+23676 


-6890 


+2518 


+ 1813 


-1270 


+ 1817 


-2902 


-7810 


-12787 


CAL 


YR 1996 


MAX 107278 


MIN 52984 b +: 


13347 
















WTR 


YR 1997 


MAX 103759 


MIN 52984 b ■ 


f8167 

















a Elevation, in feet, at end of month. 
b Change in contents, in acre-feet. 



198 SACRAMENTO RIVER BASIN 

1 1403520 LOWER BUCKS LAKE NEAR BUCKS LODGE, CA 

LOCATION.--Lat 39°53'59". long 121°13'32", in NE 1/4 NW 1/4 sec.32, T.24 N.. R.7 E.. Plumas County, Hydrologic Unit 18020121, Plumas 
National Forest, in outlet tower for Bucks Creek Tunnel 900 ft upstream from Buck Diversion Dam, 1.3 mi downstream from Bucks Lake 
Dam, and 3.2 mi northwest of Bucks Lodge. 

DRAINAGE AREA.--3I.3 mil 

PERIOD OF RECORD.-October 1985 to current year. UnpubUshed records for water years 1981-85 available in files of the U.S. Geological 
Survey. 

GAGE.-Water-stage recorder. Datum of gage is 3.50 ft below sea level (levels by Pacific Gas & Electric Co.). 

REMARKS. --Lake is formed by concrete dam. Storage began in October 1929. Usable capacity, 5,796 acreft between elevations 4,952 ft, point of 
lowest drawdown, and 5.021 .95 ft, crest of spillway. Water is received from Bucks Lake (station 1 1403500) and from Milk Ranch Conduit 
(station 1 1 403450). Most of the water is diverted through Bucks Creek Tunnel or Grizzly Powerplant (station 1 1404240) and discharges into 
Grizzly Creek for power development downstream. Figures given, including extremes, represent total contents at 2400 hours. See schematic 
diagram of No.th Fork Feather River basin. 

COOPERATION— Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. Contents not rounded to U.S. Geological Survey standards. 

EXTREMES FOR PERIOD OF RECORD.-Maxiraum contents, 6,203 acre-ft. May 18, 1996, elevation, 5,024.6 ft; minimum, 99 acre-ft, Sept. 9, 

1993, elevation, 4,956.1 ft. 

EXTREMES FOR CURRENT YEAR.-Maximum contents. 5,994 acre-ft, Jan. 1, elevation, 5.023.1 ft; minimum, 3,636 acre-ft, Feb. 9. elevation. 
5,004.2 ft. 

Capacity table (elevation, in feet, and contents, in acre-feet) 
(Based on survey by Feather River Power Co. in 1928) 
4,950 24 5,000 3,175 

4,960 194 5,010 4,307 

4,970 624 5,020 5,573 

4,980 1.314 5,030 6,981 

4,990 2,171 

RESERVOIR STORAGE (ACRE-FEET), WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 
DAILY OBSERVATION AT 2400 HOURS 

DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 



1 


5050 


4501 


4416 


5994 


5140 


4200 


3851 


4236 


4822 


4464 


4598 


4885 


2 


4797 


4355 


4236 


5912 


4835 


3955 


4141 


4296 


4797 


4525 


4822 


4847 


3 


4810 


4549 


4094 


5884 


4611 


4013 


4464 


4331 


4760 


4525 


4710 


4710 


4 


4735 


4404 


4488 


5884 


4367 


4224 


4586 


4404 


4747 


4525 


4586 


4513 


5 


4810 


4404 


4611 


5925 


4355 


4141 


4379 


4296 


4735 


4525 


4810 


4611 


6 


4847 


4785 


4464 


5953 


4272 


4200 


4404 


4177 


4722 


4525 


4660 


4673 


7 


5012 


4562 


4224 


5816 


4094 


4392 


4379 


4165 


4697 


4525 


4797 


4760 


e 


4735 


4501 


4165 


5775 


3874 


4513 


4296 


4118 


4685 


4525 


4685 


4537 


9 


4810 


4379 


4623 


5656 


3636 


4525 


4272 


4001 


4710 


4513 


4910 


4537 


10 


4697 


4379 


4872 


5520 


3726 


4537 


4248 


4416 


4697 


4513 


4885 


4525 


11 


4685 


4392 


5063 


5348 


3851 


4549 


4452 


4685 


4772 


4513 


4860 


4392 


12 


4697 


4747 


5025 


5153 


4343 


4549 


4747 


4847 


4772 


4513 


4835 


4343 


13 


4722 


5025 


4760 


5547 


4118 


4549 


4416 


4697 


4673 


4501 


4810 


4440 


14 


4810 


4847 


4635 


5721 


3874 


4549 


4284 


4392 


4416 


4501 


4782 


4476 


15 


4923 


4860 


4635 


5427 


3851 


4562 


4537 


4284 


4440 


4501 


4760 


4476 


16 


5037 


4797 


4236 


5114 


3794 


4586 


4319 


4476 


4537 


4501 


4735 


4513 


17 


5025 


4860 


4404 


4785 


3771 


4598 


4428 


4392 


4537 


4598 


4710 


4525 


18 


5025 


5089 


4574 


4440 


3908 


4611 


4440 


4367 


4537 


4923 


4685 


4525 


19 


4810 


5205 


4343 


4355 


3931 


4623 


4464 


4367 


4537 


4898 


4910 


4810 


20 


4936 


5205 


4212 


4355 


3931 


4623 


4476 


4549 


4537 


4872 


4623 


4635 


21 


4772 


4948 


4272 


4307 


4083 


4635 


4343 


4307 


4549 


4648 


4722 


4574 


22 


4611 


4835 


4001 


4284 


3920 


4648 


4200 


4319 


4537 


4923 


4635 


4611 


23 


4635 


4648 


4048 


4212 


4248 


4660 


4272 


4367 


4537 


4660 


4747 


4623 


24 


4549 


4574 


3748 


4071 


4355 


4673 


4319 


4343 


4537 


4785 


4586 


4648 


25 


4379 


4513 


4071 


4106 


4094 


4673 


4440 


4331 


4537 


4685 


4660 


4562 


26 


4248 


4189 


4141 


5050 


3839 


4440 


4307 


4319 


4537 


4598 


4710 


4464 


27 


4464 


4141 


3943 


5994 


3920 


4260 


4549 


4598 


4537 


4923 


4710 


4464 


28 


4586 


4153 


3760 


5953 


4106 


4036 


4476 


4797 


4537 


4697 


4760 


4464 


29 


4452 


3989 


3714 


5939 





3782 


4296 


4722 


4525 


4923 


4673 


4452 


30 


4488 


4165 


4236 


5735 





4001 


4106 


4923 


4537 


4747 


4810 


4392 


31 


4562 





5101 


5454 





4036 





4835 





4549 


4910 





MAX 


5050 


5205 


5101 


5994 


5140 


4673 


4747 


4923 


4822 


4923 


4910 


4885 


MIN 


4248 


3989 


3714 


4071 


3636 


3782 


3851 


4001 


4416 


4464 


4586 


4343 


a 


5012.10 


5008.80 


5016.40 


5019.10 


5008.30 


5007.70 


5008.30 


5014.30 


5011.90 


5012.00 


5014.90 


5010.70 


b 


-148 


-397 


+ 936 


+ 353 


-1348 


-70 


+70 


+729 


-298 


+ 12 


+ 361 


-518 


CAL 


YR 1996 


MAX 6203 


MIN 3658 


b +1330 


















WTR 


YR 1997 


MAX 5994 


MIN 3636 


b -318 



















a Elevation, in feet, at end of month, 
b Change in contents, in acre-feet. 



SACRAMENTO RIVER BASIN 
1 1403530 BUCKS CREEK BELOW DIVERSION DAM, NEAR BUCKS LODGE, CA 



199 



LOCATION.-Ut 39°54'16", long 121°13'47", in NW 1/4 SW 1/4 sec.29, T.24 N., R.7 E., Plumas County. Hydrologic Unit 18020121, Plumas 
National Forest, on left bank 20 ft upstream from unnamed tributary, 0.2 mi downstream fttjm diversion dam, and 3.6 mi northwest of Bucks 
Lodge. 

DRAINAGE AREA.--31.5 mi^. 

PERIOD OF RECORD.-October 1990 to current year. Unpublished records for water years 1981-90 available in files of the U.S. Geological 
Survey. 

GAGE.-Water-stage recorder and concrete control with V-notch sharp-crested weir since Sept. 19, 1990. Elevation of gage is 4,850 ft above sea 
level, from topographic map. 

REMARKS. -Records not computed for winter months. Flow regulated by diversion dam at lower Bucks Lake 0.2 mi upstream, where most of the 
flow is diverted to Grizzly Creek via Bucks Creek Tunnel outlet or Grizzly Powerplant (station 1 1404240). Prior to Sept. 19, 1990, low flows 
regulated by fixed-plate orifice at outlet of diversion dam. See schematic diagram of North Foric Feather River basin. 

COOPERATION.-Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. 



DISCHARGE, CUBIC FEET PER SECOND. WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



DAY 



OCT 



NOV 



FEB 



APR 



1 


3.7 


2.6 


1.6 


175 


2 


3.8 


1.6 


1.6 


239 


3 


3.8 


1.6 


1.7 


84 


4 


3.7 


1.6 


1.6 


56 


5 


3.7 


1.6 


1.6 


165 


6 


3.7 


1.6 


1.7 


263 


7 


3.7 


1.6 


1.7 


172 


8 


3.8 


1.6 


1.6 





9 


3.7 


1.6 


1.7 





10 


3.7 


1.6 


1.7 





11 


3.7 


1.6 


1.7 





12 


3.7 


1.6 


1.7 





13 


3.7 


1.6 


1.8 





14 


3.7 


1.6 


1.8 





15 


3.7 


1.7 


1.8 





16 


3.7 


1.7 


1.8 





17 


3.8 


1.8 


1.8 





18 


3.8 


1.9 


el. 8 





19 


3.8 


1.8 


el. 8 





20 


3.8 


1.8 


el. 8 





21 


3.7 


1.8 


el. 8 





22 


3.7 


1.7 


el. 8 





23 


3.7 


1.7 


el. 8 





24 


3.7 


1.6 


el. 8 





25 


3.7 


1.6 


el. 8 


... 


26 


3.7 


1.6 


el. 8 





27 


3.6 


1.5 


el. 8 





28 


3.6 


1.5 


el. 8 





29 


3.7 


1.6 


el. 8 





30 


3.8 


1.6 


el. 8 





31 


3.7 





el. 8 





TOTAL 


115.3 


50.3 


54.1 





MEAN 


3.72 


1.68 


1.75 





MAX 


3.8 


2.6 


1.8 





MIN 


3.6 


1.5 


1.6 





AC -FT 


229 


100 


107 





a 


11040 


10830 


11200 


14680 


CAL YR 


1996 a 


129100 






WTR YR 


1997 a 


113300 







16110 



6530 



10780 



e4.0 


e4.0 


e4.0 


g4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


64.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 


e4.0 





e4.0 


e4.0 





124.0 


120.0 


124.0 


124.0 


120.0 


4.00 


4.00 


4.00 


4.00 


4.00 


4.0 


4.0 


4.0 


4.0 


4.0 


4.0 


4.0 


4.0 


4.0 


4.0 


246 


238 


246 


246 


238 


8110 


1020 


3000 


7230 


12750 



e Estimated. 

a Diversion, in acre-feet, to Grizzly Powerplant, provided by Pacific Gas & Electric Co. 



200 



SACRAMENTO RIVER BASIN 
1 1404250 GRIZZLY FOREBAY NEAR STORRIE, CA 



LOCATION.--Ut 39°53'32 ". long 12ri7'25 ", in SW 1/4 NE 1/4 sec.34. T.24 N., R.6 E., Plumas County, Hydrologic Unit 18020121, Plumas 
National Forest, in outlet tower for Bucks Creek Powerplant 100 ft upstream from Gnzzly Diversion Dam, 2.4 mi southeast of Storrie, and 
6.2 mi west of Bucks Lodge. 

DRAINAGE AREA.-- 14.4 mil 

PERIOD OF RECORD— October 1986 to current year. Unpublished records for water years 1981-86 available in files of the U.S. Geological 
Survey. 

GAGE. "Water-stage recorder. Datum of gage is 3.50 ft below sea level (levels by Pacific Gas & Electric Co.). 

REM ARKS. --Lake is formed by concrete dam Storage began in July 1928. Usable capacity. 1,033 acre-ft between elevations 4,271 ft, bottom of 
diversion tunnel, and 4,316 ft, crest of spillway. Water is received from Bucks Creek via Bucks Creek Tunnel and Grizzly Powerplant (station 
1 1404240) which enter Grizzly Creek upstream. Most of the water is diverted through tunnel to Bucks Creek Powerplant (station 1 1403700) 
for power development downstream on North Fork Feather River Figures given, including extremes, represent total contents. See schematic 
diagram of North Fork Feather River basin. 

COOPERATION— Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. Contents not rounded to U.S. Geological Survey standards. 

EXTREMES FOR PERIOD OF RECORD.-Maxirauni contents, 1 ,329 acre-ft, Dec. 30, 1 996, elevation, 4,32 1 .5 ft; minimum, 2 1 6 acre-ft, Sept. 20. 
1991, elevation, 4,282.8 ft. 

EXTREMES FOR CURRENT YEAR.-Maximum contents, 1,329 acre-ft, Dec. 30, elevation, 4,321.5 ft; minimum, 736 acre-ft, June 16, elevation, 

4,305.0 ft. 

Capacity table (elevation, in feet, and contents, in acre-feet) 
(Based on survey by Feather River Power Co. in 1928) 
4,290 350 4,305 736 

4,295 464 4,310 898 

4,300 592 4,320 1,268 



DAY 



OCT 



RESERVOIR STORAGE (ACRE-FEET), WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 
DAILY OBSERVATION AT 2400 HOURS 

NOV DEC JAN FEB MAR APR MAY JUN JUL 



1 


898 


1002 


792 


1280 


1170 


1174 


1071 


881 


1042 


1031 


1035 


770 


2 


942 


953 


918 


1193 


1170 


1174 


1143 


901 


1064 


1046 


1049 


799 


3 


921 


974 


877 


1166 


1166 


1143 


1013 


867 


981 


960 


1038 


831 


4 


1046 


981 


1017 


1158 


1166 


1174 


877 


887 


1009 


799 


1038 


898 


5 


1024 


981 


1017 


1150 


1166 


1143 


1038 


928 


1027 


818 


981 


915 


6 


1031 


928 


773 


1147 


1166 


1174 


970 


984 


1009 


831 


884 


974 


7 


967 


1006 


844 


1174 


1166 


1174 


949 


932 


967 


844 


894 


1038 


8 


991 


970 


1060 


1174 


1166 


1135 


991 


904 


1017 


857 


960 


1042 


9 


953 


1020 


1174 


1174 


1166 


1131 


963 


942 


898 


867 


981 


857 


10 


1042 


1049 


1139 


1170 


1162 


1131 


935 


918 


834 


881 


1002 


970 


11 


988 


1024 


1170 


1170 


1143 


1131 


908 


881 


805 


891 


1027 


918 


12 


967 


974 


1158 


1170 


1135 


1131 


977 


925 


851 


901 


1046 


1002 


13 


995 


911 


1109 


1135 


1162 


1131 


932 


854 


818 


911 


1068 


928 


14 


984 


942 


1064 


1166 


1162 


1131 


999 


939 


904 


918 


1090 


1049 


15 


1027 


970 


783 


1166 


1143 


1131 


1002 


1020 


749 


928 


988 


988 


16 


1049 


991 


932 


1166 


1162 


1139 


1068 


946 


736 


939 


1009 


1013 


17 


1068 


963 


999 


1166 


1174 


1139 


1027 


946 


764 


974 


1031 


1009 


18 


1046 


1053 


1013 


1162 


1170 


1135 


967 


1020 


789 


999 


1053 


960 


19 


915 


1139 


805 


1162 


1147 


1135 


942 


925 


815 


1024 


1075 


974 


20 


953 


851 


871 


1162 


1170 


1086 


828 


745 


834 


984 


1035 


953 


21 


871 


841 


795 


1162 


1170 


1009 


818 


871 


854 


1002 


1020 


1031 


22 


991 


792 


1002 


1162 


1170 


1013 


894 


925 


874 


1017 


995 


991 


23 


921 


881 


901 


1162 


1143 


995 


988 


949 


894 


1035 


932 


960 


24 


821 


874 


1079 


1162 


1174 


1013 


981 


808 


915 


1038 


1006 


967 


25 


821 


891 


745 


1181 


1170 


960 


877 


851 


932 


1009 


995 


981 


26 


932 


887 


1166 


1166 


1170 


1086 


995 


904 


949 


1049 


995 


1017 


27 


977 


898 


1166 


1150 


1143 


1154 


1013 


841 


963 


1075 


1035 


1020 


28 


891 


942 


1166 


1150 


1170 


1135 


877 


974 


981 


1064 


991 


1057 


29 


946 


963 


1201 


1143 





1139 


761 


991 


995 


974 


881 


963 


30 


918 


745 


1329 


1170 





908 


918 


884 


1013 


884 


932 


1060 


31 


925 





1268 


1170 





877 


--- 


991 


--- 


960 


953 


--- 


MAX 


1068 


1139 


1329 


1280 


1174 


1174 


1143 


1020 


1064 


1075 


1090 


1060 


MIN 


821 


745 


745 


1135 


1135 


877 


761 


745 


736 


799 


881 


770 


a 


4310.80 


4305.30 


4320.00 


4317.50 


4317.50 


4309.40 


4310.60 


4312.70 


4313.30 


4311.80 


4311.60 


4314.60 


b 


-128 


-180 


+ 523 


-98 





-293 


+ 41 


+ 73 


♦ 22 


-53 


-7 


+ 107 


CAL 


YR 1996 


MAX 1329 


MIN 706 


b +411 


















WTR 


YR 1997 


MAX 1329 


MIN 736 


b +7 



















a Elevation, in feet, at end of month. 
b Change in contents, in acre-feet. 



SACRAMENTO RIVER BASIN 
1 1404300 GRIZZLY CREEK BELOW DIVERSION DAM, NEAR STORRIE, CA 



201 



LOCATION.--Lat 39°53'29", long 121°17'35", in SW 1/4 NE 1/4 sec.34. T.24 N., R.6 E., Plumas County, Hydrologic Unit 18020121, Plumas 
National Forest, on right bank 0.2 mi downstream from diversion dam, and 2.4 mi southeast of Storrie. 

DRAINAGE AREA.-14.4 mil 

PERIOD OF RECORD.-October 1985 to current year. Unpublished records for water years 1976-85 available in files of the U.S. Geological 
Survey. 

GAGE.--Water-stage recorder and concrete control with V-notch sharp-crested weir, since Oct. 8, 1987. Elevation of gage is 4,320 ft above sea 
level, from topographic map. Prior to Oct. 8, 1987, at datum 1.79 ft higher. 

REMARKS.-Flow regulated by diversion dam 0.2 mi upstream. There is considerable inflow upstream from the diversion dam from Bucks Creek 
Tunnel outlet and Grizzly Powerplant (station 1 1404240). Most of the flow is diverted to Bucks Creek Powerplant (station 1 1403700) on North 
Fork Feather River. See schematic diagram of North Fork Feather River basin. 

COOPERATION. -Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 6,300 ft^/s, Jan. 1, 1997, gage height, 7.33 ft, from rating curve extended above 
260 ft-'/s on basis of computation of peak flow over dam; maximum gage height, 9.54 ft, Feb. 17, 1986, datum then in use; minimum daily, 
1.9ft^/s, Junel4, 1988. 



DAY 



OCT 



DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 
NOV DEC JAN FEB MAR APR MAY JUN JUL 



1 


4.8 


3.3 


2.3 


4810 


561 


287 




2.5 


4.8 


4.8 


4.7 


4.7 


4.6 


2 


4.7 


2.3 


2.3 


1470 


552 


474 




197 


4.8 


4.8 


4.7 


4.8 


4.4 


3 


4.7 


2.4 


2.3 


631 


477 


317 




142 


4.7 


4.8 


4.7 


4.8 


4.4 


4 


4.8 


2.4 


2.4 


398 


471 


212 




2.6 


4.7 


4.8 


4.6 


4.8 


4.5 


5 


4.8 


2.4 


81 


302 


519 


424 




2.6 


4.8 


4.8 


4.5 


4.8 


4.6 


6 


4.8 


2.4 


2.6 


248 


511 


350 




2.6 


4.8 


4.8 


4.5 


4.7 


4.7 


7 


4.8 


2.4 


2.5 


409 


504 


286 




2.6 


4.8 


4.8 


4.5 


4.6 


4.7 


8 


4.7 


2.4 


2.7 


545 


497 


227 




2.6 


4.7 


4.8 


4.5 


4.6 


4.7 


9 


4.7 


2.4 


286 


554 


492 


81 




2.6 


4.7 


4.8 


4.6 


4.7 


4.6 


10 


4.8 


2.4 


591 


548 


332 


77 




2.5 


4.8 


4.7 


4.6 


4.7 


4.6 


11 


4.8 


2.4 


309 


538 


313 


81 




2.5 


4.7 


4.6 


4.6 


4.7 


4.6 


12 


4.8 


2.4 


254 


528 


120 


88 




2.5 


4.7 


4.6 


4.6 


4.7 


4.7 


13 


4.7 


2.4 


353 


510 


460 


84 




2.5 


4.7 


4.6 


4.6 


4.7 


4.7 


14 


4.8 


2.3 


3.2 


503 


478 


84 




2.5 


4.7 


4.6 


4.6 


4.8 


4.8 


15 


4.8 


2.3 


3.0 


499 


375 


91 




2.5 


4.8 


4.7 


4.7 


4.8 


4.7 


16 


4.8 


2.4 


2.7 


492 


374 


130 




2.5 


4.9 


4.5 


4.7 


4.7 


4.7 


17 


4.8 


2.5 


2.7 


488 


389 


147 




2.5 


4.8 


4.5 


4.7 


4.7 


4.7 


18 


4.9 


2.6 


8.9 


482 


299 


129 




2.5 


4.8 


4.5 


4.8 


4.7 


4.7 


19 


4.7 


41 


2.7 


477 


369 


122 




2.5 


4.8 


4.5 


4.8 


4.7 


4.6 


20 


4.7 


17 


2.6 


477 


345 


70 




2.5 


4.7 


4.6 


4.8 


4.8 


4.7 


21 


4.7 


2.5 


2.6 


478 


275 


2. 


.6 


2.5 


4.5 


4.6 


4.8 


4.7 


4.7 


22 


4.7 


2.6 


2.7 


476 


435 


2. 


.6 


2.4 


4.7 


4.6 


4.8 


4.7 


4.7 


23 


4.7 


2.4 


2.6 


472 


190 


2. 


.6 


2.5 


4.8 


4.7 


4.8 


4.6 


4.7 


24 


4.6 


2.4 


2.6 


470 


277 


2. 


.6 


2.5 


4.8 


4.6 


4.8 


4.6 


4.7 


25 


4.5 


2.4 


2.6 


686 


474 


2. 


.6 


2.5 


4.6 


4.6 


4.8 


4.7 


4.7 


26 


4.7 


2.3 


24 


813 


470 


2. 


6 


2.5 


4.7 


4.6 


4.8 


4.7 


4.7 


27 


4.7 


2.3 


412 


363 


319 


46 




2.6 


4.7 


4.6 


4.8 


4.7 


4.7 


28 


4.7 


2.4 


522 


292 


220 


237 




2.6 


4.7 


4.6 


4.8 


4.7 


4.7 


29 


4.8 


2.4 


848 


232 





178 




2.5 


4.8 


4.7 


4.8 


4.6 


4.7 


30 


4.8 


2.3 


1990 


397 





41 




3.7 


4.7 


4.7 


4.7 


4.6 


4.7 


31 


4.8 





3070 


561 





2. 


,5 





4.7 





4.7 


4.6 





TOTAL 


147.1 


126.1 


8796.0 


20149 


11098 


4281. 


,1 


410.9 


146.9 


139.9 


145.4 


145.7 


139.7 


MEAN 


4.75 


4.20 


284 


650 


396 


138 


13.7 


4.74 


4.66 


4.69 


4.70 


4.66 


MAX 


4.9 


41 


3070 


4810 


561 


474 


197 


4.9 


4.8 


4.8 


4.8 


4.8 


MIN 


4.5 


2.3 


2.3 


232 


120 


2. 


.5 


2.4 


4.5 


4.5 


4.5 


4.6 


4.4 


AC -FT 


292 


250 


17450 


39970 


22010 


8490 


815 


291 


277 


288 


289 


277 


a 


11480 


14660 


18230 








4920 


15940 


10640 


2260 


3530 


7020 


12970 



a Diversion, in acre-feet, to Bucks Creek Powerplant, provided by Pacific Gas & Electric Co. 



202 



SACRAMENTO RIVER BASIN 
1 1404300 GRIZZLY CREEK BELOW DIVERSION DAM, NEAR STORRIE, CA— Continued 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1986 - 1997, BY WATER YEAR (WY) 
OCT NOV DEC JAN FEB MAR APR MAY 



JUL 



AUG 



MEAN 


4.62 


3.86 


28.0 


66.1 


77.5 


55.0 


24.2 


41.8 


18.6 


5.93 


3.69 


3.54 


MAX 


11.8 


19.2 


284 


650 


396 


174 


215 


277 


182 


26.3 


5.49 


4.96 


(WY) 


1996 


1989 


1997 


1997 


1997 


1995 


1995 


1995 


1995 


1995 


1991 


1991 


MIN 


2.01 


2.01 


2.09 


2.11 


2.17 


2.20 


2.10 


2.03 


2.01 


2.08 


2.03 


2.00 


(WY) 


1995 


1988 


1994 


1994 


1994 


198S 


1987 


1987 


1992 


1992 


1992 


1992 



SUMMARY STATISTICS 

ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC -FT) 
ANNUAL DIVERSION (AC-FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1986 - 1997 



18864.1 






45725.8 










51.5 






125 






27.5 
125 
2.58 


1997 
1994 


3070 


Dec 


31 


4810 


Jan 


1 


4810 


Jan 1 1997 


2.3 


Jan 


13 


2.3 


Nov 


2 


1.9 


Jun 14 1988 


2.3 


Nov 


26 


2.3 


Nov 


26 


2.0 


May 2 1987 








6300 


Jan 


1 


6300 


Jan 1 1997 








7.33 


Jan 


1 


9.54 


Feb 17 1986 


37420 






90700 






19960 




177300 






101700 










126 






474 






6.1 




4.7 






4.7 






2.4 




2.4 






2.5 






2.1 





a Diversion, in acre-feet, to Bucks Creek Powerplant, provided by Pacific Gas & Electric Co. 



SACRAMENTO RIVER BASIN 
1 1404330 NORTH FORK FEATHER RIVER BELOW GRIZZLY CREEK, CA 



203 



LOCATION.--Lat 39''5r09", long 121°23'29", in NE 1/4 NW 1/4 sec.l4, T.23 N., R.5 E.. Bune County, Hydrologic Unit 18020121, Lassen 
National Forest, on left bank 0.7 mi upstream from Bear Ranch Creek, 1.6 mi downstream from Grizzly Creek, and 2.1 mi downstream from 
Cresta Dam. 

DRAINAGE AREA.--1,914 mi^. 

PERIOD OF RECORD.-October 1985 to February 1986, October 1986 to current year. Unpublished records for water years 1982-85 available in 

files of the U.S. Geological Survey. 

GAGE.-Water-stage recorder. Elevation of gage is 1 ,480 ft above sea level, from topographic map. 

REMARKS. --Flow regulated by numerous reservoirs upstream, combined capacity, 1,386,000 acre-ft. Most of the flow bypasses this station 
through Cresta Powerplant (station 1 1404360). Diversion through Cresta Powerplant began in 1949. See schematic diagram of North Fork 
Feather River basin. 

COOPERATION— Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 1 15,000 ft^/s, Jan. 1, 1997, gage height, 29.97 ft; minimum daily, 37 ft'/s, 
July 25, 1994. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



OCT 



NOV 



DEC 



JAN 



FEB 



MAR 



APR 



MAY 



JUN 



JUL 



1 


57 


60 


102 


96900 


9480 


4050 


444 


189 


63 


71 


141 


96 


2 


56 


58 


85 


73800 


9290 


4770 


583 


169 


62 


72 


132 


83 


3 


55 


56 


81 


43600 


8650 


4750 


624 


167 


102 


69 


145 


111 


4 


58 


56 


106 


25900 


8170 


4480 


460 


161 


168 


67 


101 


94 


5 


57 


56 


2290 


18000 


7790 


4650 


373 


166 


146 


803 


93 


96 


S 


57 


56 


794 


14300 


7430 


4390 


418 


171 


148 


493 


637 


89 


7 


56 


55 


175 


11900 


7180 


3710 


430 


163 


142 


387 


708 


86 


8 


56 


56 


206 


10300 


7040 


3490 


413 


167 


140 


287 


686 


80 


9 


56 


56 


3570 


9280 


6830 


3390 


319 


164 


143 


212 


428 


100 


10 


56 


56 


11900 


9070 


6530 


3250 


180 


158 


144 


180 


172 


102 


11 


57 


57 


8160 


8120 


6410 


3590 


172 


158 


140 


107 


149 


105 


12 


57 


56 


6630 


8180 


6140 


3710 


187 


155 


124 


136 


91 


113 


13 


56 


56 


5540 


7420 


6240 


3690 


182 


160 


88 


136 


131 


110 


14 


57 


56 


2220 


7230 


6130 


3870 


180 


152 


81 


131 


96 


110 


15 


58 


56 


807 


7210 


6100 


4050 


189 


115 


81 


134 


173 


113 


16 


58 


54 


355 


6710 


6050 


4230 


190 


72 


77 


102 


135 


99 


n 


57 


103 


294 


6570 


6290 


4410 


194 


71 


77 


153 


183 


93 


18 


60 


1060 


198 


6440 


6230 


4590 


215 


69 


80 


102 


167 


92 


19 


59 


1690 


182 


6280 


6180 


3110 


1570 


68 


78 


104 


124 


71 


20 


56 


1010 


171 


6150 


6110 


1190 


663 


67 


77 


63 


192 


86 


21 


56 


137 


190 


6130 


5980 


571 


1160 


65 


76 


68 


191 


84 


22 


57 


235 


196 


6780 


6020 


904 


1180 


65 


74 


97 


205 


82 


23 


57 


154 


178 


6770 


5750 


1170 


1290 


73 


72 


272 


195 


81 


24 


65 


116 


163 


6770 


5620 


967 


681 


72 


72 


539 


205 


82 


25 


65 


102 


156 


10800 


5500 


819 


449 


68 


73 


463 


188 


79 


26 


58 


93 


1150 


22800 


5510 


661 


208 


66 


69 


133 


152 


68 


27 


57 


87 


6210 


16500 


5560 


811 


202 


64 


67 


133 


147 


68 


28 


56 


85 


8190 


14000 


3810 


953 


207 


65 


67 


143 


102 


64 


29 


81 


80 


13000 


11600 





748 


204 


64 


64 


143 


94 


62 


30 


73 


77 


29100 


10500 





557 


197 


64 


67 


145 


100 


64 


31 


63 


--- 


54800 


9630 


--- 


478 





63 





137 


104 





TOTAL 


1827 


5929 


157199 


505640 


184120 


86009 


13764 


3491 


2862 


6082 


6367 


2663 


MEAN 


58.9 


198 


5071 


16310 


6576 


2774 


459 


113 


95.4 


196 


205 


88.8 


MAX 


81 


1690 


54800 


96900 


9480 


4770 


1570 


189 


168 


803 


708 


113 


MIN 


55 


54 


81 


6130 


3810 


478 


172 


63 


62 


63 


91 


62 


AC -FT 


3620 


11760 


311800 


1003000 


365200 


170600 


27300 


6920 


5680 


12060 


12630 


5280 


a 


130900 


156000 


190800 








86080 


175500 


130200 


101700 


81320 


112700 


87970 



a Diversion, in acre-feet, to Cresta Powerplant, provided by Pacific Gas & Electric Co. 



204 



SACRAMENTO RIVER BASIN 
1 1404330 NORTH FORK FEATHER RIVER BELOW GRIZZLY CREEK, CA— Continued 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1986 - 1997, BY WATER YEAR (WY) 

OCT NOV DEC JAN FEB MAR APR MAY JUN 



MEAN 


82.0 


101 


547 


1965 


1256 


2376 


1284 


1351 


439 


88.4 


78.1 


65.1 


MAX 


182 


256 


5071 


16310 


6576 


10220 


6777 


9322 


3842 


221 


205 


88.8 


(WY) 


1986 


1989 


1997 


1997 


1997 


1995 


1995 


1995 


1995 


1995 


1997 


1997 


MIN 


57.4 


57.8 


59.0 


55.7 


61.5 


86.0 


78.0 


67,7 


55.6 


55.4 


55.5 


56.0 


(WY) 


1992 


1993 


1990 


1991 


1991 


1988 


1988 


1992 


1988 


1988 


1988 


1991 



SUMMARY STATISTICS 

ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC-FT) 
ANNUAL DIVERSION (AC-FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1986 - 1997 



584951 






975953 














1598 






2674 






815 

3115 
75.2 






1995 
1994 


54800 


Dec 


31 


96900 


Jan 


1 


96900 


Jan 


1 


1997 


52 


Aug 


4 


54 


Nov 


16 


37 


Jul 


25 


1994 


53 


Jul 


30 


56 


Nov 


3 


52 


Dec 


10 


1989 








115000 


Jan 


1 


115000 


Jan 


1 


1997 








29.97 


Jan 


1 


29.97 


Jan 


1 


1997 


1160000 






1936000 






590400 








2027000 






1253000 














4080 






6910 






1420 








133 






161 






72 








57 






58 






56 









a Diversion, in acre-feet, to Cresta Powerplant, provided by Pacific Gas & Electric Co. 



SACRAMENTO RIVER BASIN 
1 1404500 NORTH FORK FEATHER RIVER AT PULGA, CA 



205 



LOCATION.--Ut 39°47'40", long 121°27'02", in SE 1/4 NE 1/4 sec.6, T.22 N., R.5 E., Bune County, Hydrologic Unit 18020121, Plumas National 
Forest, on left bank between railroad and highway bridges, 0.6 mi downstream from Flea Valley Creek and Pulga, and 1 .6 mi downstream from 
Poe Dam. 

DRAINAGE AREA.-- 1,953 mi^. 

PERIOD OF RECORD. -October 1910 to current year. Monthly discharge only for some periods and yearly estimates for water years 1911 and 
1938, published in WSP 1 3 1 5- A . Prior to October 1 960, published as "at Big Bar. " 
CHEMICAL DATA: Water years 1963-66, 1972, 1977. 
WATER TEMPERATURE: Water years 1963-83. 

REVISED RECORDS.-WSP 931: 1938(M), 1940. WSP 1515: 1935. WDRCA-77-4: 1 976 (yearly summaries). 

GAGE.-Water-stage recorder. Datum of gage is 1,305.62 ft above sea level. Prior to Oct. 1, 1937, at site 1.1 mi upstream at different datum. Oct. 1, 
1937, to Sept. 30, 1958, at present site at datum 5.00 ft higher. 

REMARKS. -Flow regulated by Lake Almanor, Bucks Lake, Butt Valley Reservoir (stations 1 1399000, 1 1403500, 1 1401050), Mountain Meadows 
Reservoir, and five forebays, combined capacity, 1 ,386,000 acre-ft. Diversion through Poe Powerplant (station 1 1404900) began on May 29, 
1958. See schematic diagram of North Fork Feather River basin. 

COOPERATION. -Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 105,400 ft'/s, Jan. 1, 1997, gage height, 41 .65 ft, from rating curve extended 
above 32,000 ft^/s on basis of slope area measurement of peak discharge; minimum daily, 5.4 ft^/s, Sept. 18, 1977. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



NOV 



DEC 



JAN 



FEB 



MAR 



APR 



MAY 



JUN 



JUL 



AUG 



SEP 



91 
90 
92 
90 
89 



90 
89 
88 
89 



95 elOlOOO 

91 676900 

93 645400 

95 627000 

2260 el8800 



66310 
66110 
65480 
64970 
64550 



6898 
61500 
61540 
61190 
el370 



6531 
6506 
6567 
6421 
6390 



6246 
6133 
6192 
6272 
6157 



ell9 
6118 
ell9 
6123 
6112 



6115 

6116 

6115 
ell5 
ell5 



6113 
elll 
6113 
ell5 
ell5 



110 
362 

127 
114 
115 



9 
10 



89 
86 
89 



974 613500 

204 68910 

142 67260 

6000 66200 

15700 65960 



64200 61090 

63960 6912 

63800 6880 

63580 6859 

63200 6958 



6468 
6457 
6519 
6381 
6211 



6173 
6167 
6196 
el40 
6179 



6113 
6111 
6118 

6115 
6119 



6117 

ell5 
ell4 

6117 

6115 



ell5 
6115 
6115 

6115 

ell5 



115 
115 
115 
115 
114 



11 

12 
13 
14 
15 

16 
17 
18 
19 
20 

21 
22 
23 
24 
25 



88 
89 
88 
84 

91 

90 
91 
91 
95 
89 

91 
89 
89 
93 
93 



86 



105 

880 

1640 

1140 

122 

124 

110 

97 

96 



11000 64960 63100 6919 

9300 65030 62860 6944 

8020 64230 62960 61010 

4560 64040 62800 el260 

3100 64020 62760 61570 



2580 63450 

2150 63330 

1620 63200 

1260 63020 

1950 62890 



1300 
1970 
1360 

171 
146 



62850 
63560 
63550 
63550 
67750 



62770 
63040 
62950 
62890 
62820 

62690 
62760 
62490 
62350 
62240 



61190 

61070 

61240 

6552 

6737 

6666 
61070 
el330 
61170 
elOlO 



6213 
el29 
el69 
6146 
694 

6188 

6171 

6263 

62650 

6720 

61170 

61240 

61380 

6750 

6497 



61290 
6116 

6115 
6115 

ell9 
6119 

6117 

6117 

6116 
6119 

6118 

ell5 
elll 
6119 

6118 



6118 
6115 
6115 
6117 
6114 

6117 
6113 
6115 
6115 
6116 

ell5 

6115 
6115 
6116 

6109 



6114 
6111 
6121 
6116 
6116 

6116 

el21 
6117 

6115 
6117 

6117 

ell7 
ell5 
ell5 
6115 



ell5 
6115 
6115 
6109 
114 

112 
111 
114 
114 
115 

113 
112 
111 
112 
111 



115 
116 
116 
116 
117 

116 
115 
117 
109 
113 

115 
116 
115 
117 
116 



26 
27 
28 
29 
30 
31 

TOTAL 
MEAN 
MAX 
MIN 
AC -FT 



89 
88 
99 
96 
90 

2792 

90.1 

99 

84 

5540 



92 
90 
91 
94 
90 



349 

7100 

10100 

14200 

611000 

610100 



620300 

613700 

elllOO 

68480 

67400 

66520 

437870 

14120 

101000 

2850 



62230 

62360 

6902 



6184 128991 

206 4161 

1640 15700 

86 91 

12270 255900 868500 184700 



93132 

3326 

6310 

902 



6821 
e988 
61170 
6962 
6600 
6525 

32001 

1032 

1570 

525 

63470 



e258 
6332 
6295 
6182 
6256 



15554 

518 

2650 

94 

30850 



117600 141300 136000 181000 200700 206200 174300 



6117 
6115 
6112 
6115 
6118 
ell9 

5475 

177 

1290 

111 

10860 

120900 



6113 
elll 
6109 
6110 
ell6 



3451 
115 
123 
109 

6850 
94850 



6115 
6115 
ell3 
6113 
6111 
ell5 

3579 
115 
121 
111 

7100 
81820 



111 
109 
110 
111 
111 
112 

3499 

113 

115 

109 

6940 

103900 



115 
115 
115 
115 
116 



3707 
124 
362 

109 

7350 

77720 



e Estimated. 

a Diversion, in acre-feet, to Poe Powerplant, provided by Pacific Gas & Electric Co. 



206 



SACRAMENTO RIVER BASIN 
1 1404500 NORTH FORK FEATHER RIVER AT PULGA, CA— Continued 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1911 - 1997, BY WATER YEAR (WY) 
OCT NOV DEC JAN FEB MAR APR MAY 



JUN 



JUL 



MEAN 


969 


1165 


1730 


2287 


2768 


2886 


3519 


3037 


1585 


975 


921 


875 


MAX 


2943 


4594 


10690 


14120 


14320 


11960 


13580 


12460 


7690 


2771 


2441 


2430 


(WY) 


1963 


1951 


1956 


1997 


1986 


1995 


1952 


1922 


1911 


1952 


1952 


1952 


MIN 


16.4 


26.4 


50.7 


52.6 


56.0 


58.2 


54.9 


41.7 


34.0 


32.6 


13.3 


14.2 


(WY) 


1978 


1978 


1977 


1977 


1990 


1977 


1990 


1977 


1977 


1977 


1977 


1977 



SUMMARY STATISTICS 

ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC-FT) 
ANNUAL DIVERSION (AC-FT) a 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1911 - 1997 



588866 






736235 














1609 






2017 






1863 
5320 
42.7 






1952 
1977 


17600 


Feb 


21 


101000 


Jan 


1 


101000 


Jan 


1 


1997 


58 


Jan 


12 


84 


Oct 


14 


5.4 


Sep 


18 


1977 


59 


Jan 


8 


88 


Oct 


8 


12 


Aug 


10 


1977 








105400 


Jan 


1 


105400 


Jan 


1 


1997 








41.65 


Jan 


1 


41.65 


Jan 


1 


1997 


1168000 






1460000 






1350000 








2049000 






1636000 














4420 






4210 






4630 








102 






117 






1320 








89 






90 






55 









a Diversion, in acre-feet, to Poe Poweiplant, provided by Pacific Gas & Electric Co. 



SACRAMENTO RIVER BASIN 
1 1405120 PHILBROOK CREEK BELOW PHILBROOK DAM, NEAR BUTTE MEADOWS, CA 



207 



L0CAT10N.--Lat 40°0r48", long 121°28'36", unsurveyed, T.25 N., R.4 E., Butte County, Hydrologic Unit 18020121, Lassen National Forest, on 
right bank 500 ft downstream from outlet structure on Philbrook Dam. and 5.4 mi southeast of Butte Meadows. 

DRAINAGE AREA.--5.05 mi^. 

PERIOD OF RECORD.--July 1989 to current year (no winter records). Unpublished records for water years 1986-89 available in files of the U.S. 
Geological Survey. 

GAGE.--Water-stage recorder, Parshall flume, and V-notch sharp-crested weir. Elevation of gage is 5,490 ft above sea level, from topographic map. 

October 1985 to July 1989, nonrecording gage at same site and datum. In June 1989, V-notch sharp-crested weir installed in flume to be used 

at low flows. 
REMARKS— Records not computed for winter months. Flow completely regulated by Philbrook Reservoir, usable capacity, 5,370 acre-ft, 500 ft 

upstream. Spillwater from Philbrook Reservoir bypasses this station. 

COOPERATION. -Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



DAY 



NOV 



DEC 



JAN 



FEB 



MAR 



APR 



MAY 



JtJN 



JUL 



SEP 



1 


.76 


3.1 


4.2 


2 


.98 


3.1 


4.1 


3 


1.2 


3.1 


4.0 


i 


1.1 


3.1 


4.1 


5 


1.1 


3.1 


4.2 


6 


1.1 


3.1 


4.2 


7 


1.1 


3.1 


4.2 


8 


1.3 


3.1 


4.9 


9 


1.2 


3.1 


4.4 


10 


1.7 


3.1 


4.4 


n 


3.3 


3.1 


4.5 


12 


3.3 


3.1 


4.7 


13 


3.3 


3.1 


5.6 


14 


3.3 


3.1 


5.4 


15 


3.4 


3.1 


5.5 


16 


3.3 


3.1 


5.2 


17 


3.2 


3.1 


5.0 


18 


3.2 


3.1 


4.7 


19 


3.2 


3.1 


4.7 


20 


3.1 


3.5 


4.7 


21 


3.1 


3.6 


4.6 


22 


3.1 


4.3 


4.4 


23 


3.1 


3.9 


4.4 


24 


3.1 


4.0 


4.4 


25 


3.1 


4.2 


4.4 


26 


3.2 


4.2 


4.4 


27 


3.1 


4.2 


4.4 


28 


3.1 


4.2 


4.4 


29 


3.1 


4.2 


4.4 


30 


3.1 


4.2 


4.9 


31 


3.1 








TOTAL 


78.34 


103.4 





MEAN 


2.53 


3.45 





MAX 


3.4 


4.3 





MIN 


.76 


3.1 





AC -FT 


155 


205 









4.3 


5.0 


3.4 


11 


39 




8.2 





4.3 


5.0 


3.4 


11 


39 




2.1 





4.3 


5.0 


3.4 


11 


39 




3.9 





4.3 


5.0 


3.5 


11 


38 




3.9 


--- 


4.3 


5.0 


3.5 


11 


43 




3.8 


— 


4.3 


5.0 


3.5 


11 


79 




3.8 





4.3 


4.0 


3.5 


15 


79 




3.8 





4.3 


3.0 


3.4 


18 


53 




3.8 





4.4 


3.1 


3.4 


18 


52 




3.8 


- — 


4.4 


3.1 


3.4 


18 


52 




3.8 


— . 


4.4 


3.1 


3.4 


18 


52 




3.8 





4.4 


3.1 


3.5 


18 


51 




3.8 





4.5 


3.1 


3.5 


18 


51 




3.8 





4.6 


3.1 


3.5 


18 


51 




3.8 


— 


4.6 


3.2 


3.5 


15 


50 




3.8 


... 


4.6 


3.1 


3.5 


13 


50 




3.7 





4.6 


3.1 


3.5 


13 


49 




3.7 





4.7 


3.2 


3.5 


19 


49 




3.8 





5.1 


3.2 


3.5 


22 


48 




3.8 


... 


4.9 


3.2 


3.5 


22 


48 




3.8 


... 


5.0 


3.2 


3.5 


22 


48 




3.8 





4.9 


3.2 


3.5 


22 


47 




3.7 





4.9 


3.2 


3.5 


22 


47 




3.6 





4.9 


3.2 


3.5 


27 


46 




3.5 


4.2 


4.9 


3.3 


3.5 


33 


64 




3.4 


4.2 


4.9 


3.3 


3.5 


33 


63 




3.4 


4.2 


4.9 


3.3 


3.5 


32 


36 




3.5 


4.2 


4.9 


3.3 


3.5 


32 


e. 


,2 


3.6 


4.2 


5.0 


3.3 


3.5 


32 


8. 


,2 


3.6 


4.3 


5.0 


3.3 


2.3 


32 


8, 


,2 


3.6 


4.3 


... 


3.3 





36 


8. 


.2 





... 


138.9 


110.5 


103.1 


634 


1395 


.8 


114.4 





4.63 


3.56 


3.44 


20.5 


45. 


,0 


3.81 





5.1 


5.0 


3.5 


36 


79 


8.2 





4.3 


3.0 


2.3 


11 


8 


.2 


2.1 





276 


219 


204 


1260 


2770 


227 



208 



SACRAME>rrO RIVER BASIN 



1 1405200 WEST BRANCH FEATHER RIVER BELOW HENDRICKS DIVERSION DAM. NEAR STIRLING CITY. CA 

LOCATION.-Ul 39°56'03". long 121°3r43", in NW 1/4 SE 1/4 sec 16, T.24 N., R.4 E.. Bune County. Hydrologic Unit 18020121, on right bank 

200 ft upstream from road bridge. 1.800 ft downstream from Hendricks Diversion Dam. and 1.9 mi north of Stirling City. 
DRAINAGE AREA.-46.1 mir 

PERIOD OF RECORD.--August 1986 to current year (low-flow records only). 
GAGE.--Water-stage recorder. Elevation of gage is 3.210 ft above sea level, from topographic map. 

REMARKS.-No records computed above 40 ft^/s. Most of the water is diverted at Hendricks Diversion Dam to the Hendricks Canal and Toadtown 
Canal (station 1 1389800) and then to De Sabia Powerplant (station 1 1389750) on Butte Creek. 

COOPERATION.-Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Cominission project. 

DISCHARGE. CUBIC FEET PER SECOND. WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAO-Y MEAN VALUES 



DAY 



OCT 



1 


19 


2 


19 


3 


19 


4 


19 


5 


19 


6 


19 


7 


19 


8 


19 


9 


19 


10 


18 


11 


19 


12 


19 


13 


19 


14 


IB 


15 


18 


16 


19 


17 


18 


18 


19 


19 


19 


20 


19 


21 


19 


22 


19 


23 


19 


24 


19 


25 


19 


26 


19 


27 


19 


28 


19 


29 


20 


30 


20 


31 


19 


TOTAL 


587 


MEAN 


18.9 


MAX 


20 


MIN 


18 


AC -FT 


1160 



19 
19 
19 
19 
19 

19 
19 
19 
19 
19 

19 
19 
18 
IS 
18 

18 
27 



37 

21 

19 
19 
19 
19 
19 



DEC 

34 
19 
19 



FEB 



MAY 



AUG 



39 
37 
38 
35 

36 



— 


21 


18 


19 


— 


20 


17 


20 


— 


20 


16 


19 


— 


19 


16 


19 


— 


19 


17 


19 





19 


20 


19 


— 


19 


19 


18 


— 


19 


18 


18 


29 


20 


18 


18 


24 


19 


19 


18 


20 


19 


20 


18 


18 


20 


19 


18 


19 


20 


19 


19 


17 


21 


19 


20 


18 


21 


19 


20 


19 


22 


19 


20 


19 


22 


19 


20 


19 


22 


19 


20 


19 


23 


19 


20 


21 


27 


26 


20 


21 


23 


20 


20 


21 


17 


19 


20 


21 


18 


18 


20 


21 


20 


18 


20 


21 


21 


20 


20 


21 


19 


20 


20 


22 


17 


20 


20 


20 


17 


19 


20 


19 


19 


19 


20 


24 


19 


20 


20 


-- 


19 


19 


--- 


— 


621 


588 


582 


— 


20.0 


19.0 


19.4 


-- 


27 


26 


20 


— 


17 


16 


18 


— 


1230 


1170 


1150 



SACRAMENTO RIVER BASIN 



209 





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210 



SACRAMENTO RIVER BASIN 
1 1406800 LAKE OROVILLE NEAR OROVILLE, CA 



LOCATION.--Ut 39°32'06", long 121°28'25", in NE 1/4 SW 1/4 seel. T.19 N., R.4 E., Bune County, Hydrologic Unit 18020123, near intake 

structure at left end of OroviUe Dam on Feather River, 1 .0 mi downstream from North Fork Feather River, and 4.2 mi east of OroviUe. 
DRAINAGE AREA.--3,607 mil 
PERIOD OF RECORD.-November 1967 to current year. 

GAGE.--Water-stage recorder Datum of gage is 0.47 ft above sea level Qevels by California Department of Water ResouTx:es). Contents based on 
capacity table in use since Sept. 21, 1967. 

REMARKS --Reservoir is formed by an earthfill dam with concrete chute-type sidehill spillway completed May 13. 1968; storage began Nov. 14. 
1967. Usable capacity. 2.685.385 acre-ft between elevations 640.0 ft. minimum power pool, and 900.0 ft, normal maximum pool. Dead storage. 
852.192 acre-ft. Total capacity at normal maximum pool. 3.537.577 acre-ft; temporary detention storage occurred at times during construction; 
maximum was 155.200 acre-ft. Dec. 23, 1964. Water is released to Edward Hyatt Powerplant through penstock m left abutment of dam and to 
Palermo Canal (station 1 1406810) through concrete tunnel also in left abutment of dam. Three of the total of six turbines in the Edward Hyatt 
Powerplant are reversible and during periods of low power demand water is pumped at times from the river back into Lake Oroville. Records. 
including extremes, represent total contents at 2400 hours. See schematic diagram showing diversions and storage from Feather River at Lake 
Oroville. Maximum inflow of 266.000 ft'^/s during a 2-hour period Feb. 17. 1986. 

COOPERATION— Records were collected by Califomia Department of Water Resources, under general supervision of the U.S. Geological Survey. 

in connection with a Federal Energy Regulatory Commission project Contents not rounded to U.S. Geological Survey standards. 
EXTREMES FOR PERIOD OF RECORD.-Maximum contents. 3.536.000 acre-ft. June 4. 1973. gage height. 899.88 ft; minimum since initial 

storage began. 882.395 acre-ft. Sept. 7. 1977, gage height, 645.1 1 ft. 
EXTREMES FOR CURRENT YEAR.-Maximum contents, 3,332,558 acre-ft, Jan. 2, gage height, 886.75 ft; minimum, 2,139,728 acre-ft, Sept. 30, 
gage height, 795.35 ft. 

Capacity table (gage height, in feet, and contents, in acre-feet) 
(Based on table provided by Cailifomia Department of Water Resources, dated Sept. 21, 1967) 



640 


852,192 


710 


1.332.547 


780 


1.974.240 


850 


2.808.349 


650 


911.975 


720 


1.413.685 


790 


2.080.969 


860 


2.944.741 


660 


974.560 


730 


1.498.175 


800 


2.191.742 


870 


3.085.747 


670 


1.040.003 


740 


1.586,086 


810 


2.306.597 


880 


3.231.454 


680 


1.108.406 


750 


1,677,554 


820 


2.425.571 


890 


3.382,038 


690 


1.179.915 


760 


1,772,690 


830 


2.548.850 


900 


3.537.577 


700 


1.254.634 


770 


1.871.511 


840 


2.676.446 







RESERVOIR STORAGE (ACRE-FEET), WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 
DAE,Y OBSERVATION AT 2400 HOURS 



NOV 



DEC 



JAN 



FEB 



MAR 



APR 



MAY 



JtJN 



JUL 



1 


2735516 


2678782 


2723026 


3226424 


2841074 


2672814 


2969643 


3225685 


3194729 


2950851 


2421339 


2204628 


2 


2734463 


2676056 


2718304 


3332558 


2821513 


2675537 


2973132 


3225389 


3190764 


2928136 


2405295 


2195354 


3 


2734331 


2675667 


2711623 


3315024 


2797497 


2670351 


2977322 


3233084 


3185483 


2906232 


2408185 


2191065 


4 


2733147 


2670481 


2706784 


3235307 


2770302 


2665042 


2990060 


3241093 


3178598 


2891967 


2390643 


2185881 


5 


2731831 


2665042 


2731305 


3137218 


2743293 


2657029 


3007056 


3235307 


3174648 


2878160 


2372832 


2181606 


6 


2731436 


2658449 


2738282 


3038133 


2717386 


2660387 


3020165 


3231602 


3166173 


2866849 


2355113 


2188472 


7 


2728542 


2651996 


2751086 


2955715 


2697384 


2666207 


3024968 


3229977 


3167487 


2851365 


2337014 


2192644 


8 


2727623 


2651094 


2765390 


2897310 


2676186 


2677225 


3030908 


3230569 


3175964 


2830945 


2319129 


2183293 


9 


2725784 


2657803 


2784677 


2846216 


2658062 


2687226 


3036432 


3234121 


3165297 


2811971 


2320068 


2179358 


10 


2725258 


2662843 


2851500 


2803924 


2643753 


2689177 


3036998 


3241242 


3161213 


2793220 


2333005 


2173072 


11 


2723551 


2658708 


2875432 


2775753 


2632575 


2697644 


3039975 


3250753 


3153928 


2774290 


2320890 


2169262 


12 


2721845 


2654576 


2882393 


2758894 


2624629 


2703647 


3054752 


3244806 


3148836 


2762207 


2305778 


2163891 


13 


2718041 


2650063 


2876796 


2743821 


2620919 


2712278 


3068864 


3242281 


3142588 


2747386 


2291666 


2170943 


14 


2714242 


2646713 


2854348 


2727097 


2619256 


2722764 


3071292 


3238273 


3138814 


2729989 


2279816 


2173297 


15 


2711492 


2643367 


2823668 


2714373 


2622326 


2733410 


3076152 


3231750 


3138379 


2710184 


2267432 


2173297 


16 


2707045 


2650191 


2799772 


2704432 


2632960 


2749764 


3080731 


3227016 


3129104 


2689308 


2264776 


2170718 


17 


2703779 


2660129 


2787078 


2699079 


2638609 


2765257 


3086176 


3225685 


3118838 


2669444 


2279468 


2167135 


18 


2700645 


2667372 


2770967 


2693604 


2645554 


2779347 


3094354 


3235307 


3107299 


2648516 


2269859 


2162550 


19 


2699731 


2677096 


2753598 


2689308 


2656770 


2790281 


3120716 


3233380 


3093349 


2637582 


2254519 


2156633 


20 


2696731 


2685536 


2738941 


2689698 


2665560 


2801111 


3140700 


3234269 


3083452 


2636682 


2241772 


2164339 


21 


2695298 


2686836 


2725127 


2689698 


2674370 


2815732 


3147963 


3226720 


3075294 


2619256 


2229761 


2171391 


22 


2692822 


2690348 


2711361 


2716469 


2684106 


2836479 


3157569 


3219034 


3082450 


2597587 


2219161 


2163556 


23 


2691130 


2703125 


2699079 


2725127 


2694516 


2856384 


3167195 


3213425 


3070435 


2576169 


2217909 


2158753 


24 


2690219 


2711492 


2686706 


2704562 


2694386 


2871615 


3176696 


3217262 


3055036 


2552489 


2228734 


2151730 


25 


2688917 


2710183 


2679691 


2740655 


2692953 


2886083 


3185776 


3223319 


3039550 


2532081 


2220071 


2147946 


26 


2686316 


2707437 


2687746 


2832429 


2690348 


2899367 


3198256 


3229532 


3023555 


2514397 


2206101 


2148391 


27 


2684756 


2701167 


2707306 


2872569 


2684756 


2910218 


3207380 


3218000 


3006212 


2515142 


2191404 


2155630 


28 


2683067 


2708353 


2685926 


2883213 


2675667 


2923718 


3207822 


3206644 


2996654 


2497911 


2184193 


2159646 


29 


2685666 


2709530 


2672294 


2883486 





2939894 


3216376 


3195023 


2987677 


2480148 


2187693 


2152621 


30 


2685536 


2715028 


2741974 


2873387 





2957106 


3222432 


3185043 


2970340 


2460638 


2194789 


2139728 


31 


2683587 





2929103 


2860050 





2962255 





3187389 





2441723 


2201797 





MAX 


2735516 


2715028 


2929103 


3332558 


2841074 


2962255 


3222432 


3250753 


3194729 


2950851 


2421339 


2204628 


MIN 


2683067 


2643367 


2672294 


2689308 


2619256 


2657029 


2969643 


3185043 


2970340 


2441723 


2184193 


2139728 


a 


840.55 


842.96 


858.87 


853.83 


839.94 


861.26 


879.39 


877.01 


861.84 


821.33 


800.89 


795.35 


b 


-51929 


+31441 


+214075 


-69053 


-184383 


+286588 


+260177 


-35043 


-217049 


-528617 


-239926 


-62069 


c 


5139 


1614 


1167 


862 


1844 


3272 


4394 


7188 


7823 


10116 


8173 


7001 



CAL YR 1996 b +227022 
WTR YR 1997 b -595788 



a Gage height, in feet, at end of month. 

b Change in contents, in acre-feet. 

c Evaporation, in acre-feet, provided by Califomia Department of Water Resources; not reviewed by the U.S. Geological Survey 



SACRAMENTO RTVER BASIN 
1 1406810 PALERMO CANAL NEAR OROVILLE, CA 



211 



L0CAT10N.--Ut 39°3r59 ", long 121°28'54", in SW 1/4 SW 1/4 seel, T.19 R, R.4E., Butte County, Hydrologic Unit 18020106, on right bank 

50 ft downstream from Oroville Dam and 4.4 mi east of Oroville. 
PERIOD OF RECORD.--April 1965 to current year. Daily discharge records of diversion from Kelly Ridge Penstock for period April 1965 to 

October 1968, when Kelly Ridge Penstock supplied the entire flow of Palermo Canal, are in files of the U.S. Geological Survey. 
GAGE.--Water-stage recorder and Parshall flume. Datum of gage is 547.67 ft above sea level (levels by California Department of Water Resources). 

April 1965 to October 1968, water-stage recorder and Parshall flume at site of diversion from Kelly Ridge Penstock, 0.4 mi downstream at 

different datum. 
REMARKS. --Canal diverts from left end of Oroville Dam. Water is used for irrigation near Oroville. During period of construction of Oroville 

Dam, water was released from Kelly Ridge Penstock to meet irrigation requirements. See schematic diagram showing diversions and storage 

from Feather River at Lake Oroville. 

COOPERATION. -Records were provided by California Department of Water Resources, under general supervision of the U.S. Geological Survey, 
in connection with a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD.-Maximum daily discharge, 28 ft^/s, several days during July to September 1967; no flow at times in 
some years. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



NOV 



DEC 



JAN 



FEB 



MAR 



APR 



MAY 



JUN 



JUL 



1 


17 




3.3 


3.0 


.00 




2.0 


2.2 


6.9 




15 


18 


18 




19 


19 


2 


17 




3.3 


3.0 


.00 




2.0 


2.2 


6.9 




17 


18 


18 




19 


19 


3 


n 




3.3 


3.0 


.00 




2.0 


2.3 


6.9 




18 


18 


18 




19 


19 


4 


17 




3.3 


3.1 


.00 




2.0 


2.2 


7.0 




18 


18 


18 




19 


19 


5 


17 




3.3 


3.1 


.00 




2.0 


2.3 


7.0 




18 


18 


18 




19 


19 


6 


17 




3.3 


3.1 


1.7 




2.0 


3.3 


7.0 




18 


18 


18 




19 


19 


7 


17 




3.3 


3.2 


2.6 




2.0 


5.1 


6.9 




18 


18 


18 




19 


19 


8 


17 




3.3 


3.1 


2.6 




2.0 


5.1 


6.9 




18 


18 


18 




19 


19 


9 


17 




3.3 


3.0 


2.6 




2.0 


5.0 


8.8 




18 


18 


18 




19 


19 


10 


17 




3.3 


3.1 


2.7 




2.0 


4.9 


10 




18 


18 


18 




19 


19 


H 


17 




3.3 


3.1 


3.2 




2.0 


4.9 


10 




18 


18 


18 




19 


19 


12 


17 




3.3 


3.1 


3.2 




2.0 


4.9 


10 




18 


18 


18 




19 


19 


13 


17 




3.3 


3.1 


3.0 




2.0 


4.9 


10 




18 


18 


18 




19 


19 


14 


17 




3.3 


3.1 


3.0 




2.0 


5.0 


15 




18 


18 


18 




19 


19 


15 


17 




3.3 


3.0 


3.0 




2.1 


5.1 


18 




18 


18 


18 




19 


16 


16 


17 




3.2 


3.0 


3.0 




2.1 


5.1 


18 




18 


18 


19 




19 


15 


17 


16 




3.0 


3.0 


3.0 




2.1 


5.2 


18 




18 


18 


19 




19 


15 


18 


14 




3.0 


3.0 


3.0 




2.1 


5.2 


18 




18 


18 


19 




19 


15 


19 


13 




3.0 


3.0 


3.0 




2.1 


5.3 


18 




18 


18 


19 




19 


IS 


20 


13 




3.0 


3.0 


3.0 




2.1 


5.3 


18 




18 


18 


19 




19 


15 


21 


11 




3.0 


3.0 


3.0 




2.1 


5.3 


11 




18 


18 


19 




19 


15 


22 


10 




3.0 


3.0 


1.3 




2.1 


5.3 


8.2 




18 


18 


19 




19 


15 


23 


10 




3.1 


3.0 


.00 




2.0 


5.3 


13 




18 


18 


19 




19 


15 


24 


7.5 




3.1 


3.0 


.00 




2.0 


5.2 


15 




18 


18 


19 




19 


15 


25 


5.5 




3.0 


3.0 


.00 




2.1 


4.7 


15 




18 


18 


19 




19 


15 


26 


5.6 




3.0 


3.0 


.00 




2.1 


4.8 


15 




18 


18 


19 




19 


15 


27 


5.7 




3.0 


1.1 


1.4 




2.0 


5.9 


15 




18 


18 


19 




19 


15 


28 


5.6 




3.0 


.00 


2.0 




2.1 


6.9 


IS 




18 


18 


19 




19 


15 


29 


5.5 




3.0 


.00 


2.0 







6.9 


15 




18 


18 


19 




19 


15 


30 


3.9 




3.0 


.00 


2.0 







6.7 


15 




18 


18 


19 




19 


15 


31 


3.3 







.00 


2.0 







6.9 







18 





19 




19 





TOTAL 


401.6 




94.9 


80.20 


56.30 




57.1 


149.4 


364.5 




554 


540 


574 




589 


507 


MEAN 


13.0 




3.16 


2.59 


1.82 




2.04 


4.82 


12.1 




17.9 


18.0 


18.5 




19.0 


16.9 


MAX 


17 




3.3 


3.2 


3.2 




2.1 


6.9 


18 




18 


18 


19 




19 


19 


MIN 


3.3 




3.0 


.00 


.00 




2.0 


2.2 


6.9 




15 


18 


18 




19 


15 


AC -FT 


797 




188 


159 


112 




113 


296 


723 




1100 


1070 


1140 




1170 


1010 


STATISTICS OF 


MONTHLY MEAN DATA 


FOR WATER YEARS 1969 


- 1997 


, BY WATER 


YEAR (WY) 












MEAN 


12.4 




5.25 


3.32 


2.71 




2.35 


2.81 


6.29 




14.5 


19.0 


19.5 




19.8 


18.8 


MAX 


18.0 




8.56 


5.94 


5.12 




5.33 


6.22 


19.1 




22.3 


24.5 


24.5 




24.5 


22.8 


(WY) 


1979 




1994 


1975 


1971 




1974 


1988 


1970 




1976 


1976 


1975 




1978 


1975 


MIN 


6.85 




2.04 


.000 


.21 




.000 


.000 


.000 




3.21 


13.4 


16.0 




16.2 


13.8 


(WY) 


1973 




1983 


1982 


1995 




1975 


1979 


1991 




1995 


1993 


1991 




1991 


1985 


SIMMARY STATISTICS 


FOR 


1996 CALENDAR YEAR 




FOR 1997 


WATER YEAR 




WATER 


YEARS 1969 - 


1997 


ANNUAL 


TOTAL 








3585 


40 






3968 


00 














ANNUAL 


MEAN 








9 


80 






10 


9 






10 


6 






HIGHEST ANNUAL MEAN 




















13 


3 




1970 


LOWEST 


ANNUAL 


MEAN 




















7 


54 




1995 


HIGHEST DAILY 


MEAN 




19 




Aug 23 




19 




Jul 16 




26 




Jul 2 


1975 


LOWEST 


DAILY MEAN 








00 


Jan 17 






00 


Dec 28 






00 


Jan 15 


1970 


ANNUAL 


SEVEN-DAY MINIMUM 






00 


Jan 17 






00 


Dec 28 






00 


Jan 15 


1970 


ANNUAL 


RUNOFF 


(AC- 


FT) 




7110 








7870 








7690 








10 PERCENT EXCEEDS 




19 








19 








21 








50 PERCENT EXCEEDS 






5 


4 






15 








8 


9 






90 PERCENT EXCEEDS 






63 






2 









1 


4 







212 SACRAMENTO RIVER BASIN 

1 1406870 THERMALITO AFTERBAY NEAR OROVILLE, CA 

LOCATION.-Lat 39°27'30", long 121°38' 17", in NE 1/4 SE 1/4 sec.33, T.19 N., R.3 E., Butte County, Hydrologic Unit 18020106, at dam 195 ft 
northeast of centerline of outlet structure and 5.7 mi southwest of Oroville. 

PERIOD OF RECORD-October 1967 to current year. 

GAGE.-Water-stage recorder. Datum of gage is 100.47 ft above sea level (levels by California Depanment of Water Resources). Auxiliary water- 
stage recorder 90 ft southwest of centerline of Western Canal outlet, and 7.2 mi west of Oroville. 

REMARKS. --Reservoir is formed by an earthfill dam completed in 1967. Diversion from the reservoir began Oct. 12, 1967. Usable capacity. 
61,144 acre-ft between gage heights 120.0 and 139.0 ft, extreme operating levels. Normal operating range is 123 to 136.5 ft. Water is released 
to four canals (stations 1 1406880, 1 1406890, 1 1406900, and 1 1406910) and to the Feather River (station 1 1406920) from the reservoir. Total 
maximum release to the four canals is approximately 4,000 ft /s. Water is pumped, at times, from Thermalito Afterbay back into Thermalito 
Forebay during off-peak periods to be re-released through Thermalito Powerplant for power generation during peak-demand periods. Records, 
including extremes, represent total contents at 24(X) hours. See schematic diagram showing diversions and storage from Feather River at Lake 
Oroville. 

COOPERATION. --Records were collected by California Department of Water Resources, under general supervision of the U.S. Geological Survey, 
in connection with a Federal Energy Regulatory Commission project. Contents not rounded to U.S. Geological Survey standards. 

EXTREMES FOR PERIOD OF RECORD.-Maximum contents, 57,300 acre-ft. May 24, 1969, gage height, 136.56 ft; minimum since initial 
operation began, 5,590 acre-ft. Mar 1, 1968, gage height, 1 19.09 ft. 

EXTREMES FOR CURRENT YEAR.-Maximum contents. 51,644 acre-ft, Aug. 8, gage height. 135.22 ft; minimum. 14.254 acre-ft, Oct. 9, gage 
height, 123.61 ft. 

Capacity table (gage height, in feet, and contents, in acre-feet) 
(Based on table provided by California Department of Water Resources, dated Oct. 10, 1968) 

119 5.465 124 15,157 130 32,150 

120 7,054 126 20,171 134 46,719 
122 10,792 128 25,832 139 68.198 

RESERVOIR STORAGE (ACRE-FEET), WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 
DAILY OBSERVATION AT 2400 HOURS 

DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 



1 


14277 


20332 


25532 


39302 


39522 


29737 


33867 


27196 


26191 


29417 


49842 


23630 


2 


14690 


21744 


29801 


37639 


39412 


23373 


39558 


30737 


23602 


34896 


50412 


29545 


3 


14529 


21196 


36643 


37389 


39193 


22411 


44220 


26041 


24470 


40072 


32285 


32251 


4 


14713 


24121 


43147 


37460 


39448 


26981 


41822 


20199 


30187 


39925 


35590 


35800 


5 


14806 


27782 


48270 


37747 


39631 


35451 


33358 


25951 


32786 


35625 


38322 


38394 


6 


14621 


32752 


48070 


38647 


39925 


37818 


27844 


31424 


38720 


30445 


40553 


32085 


7 


14876 


38250 


37890 


39595 


37962 


40405 


31129 


34449 


34140 


29067 


46090 


26951 


8 


14946 


37425 


26312 


40257 


38106 


39011 


31589 


34483 


23458 


31985 


51644 


34655 


9 


14254 


31227 


30737 


40701 


38394 


34414 


34862 


32786 


30090 


34966 


39448 


37603 


10 


14437 


24734 


28280 


40590 


38394 


39083 


39962 


26464 


31194 


35870 


19378 


41671 


11 


14323 


25443 


25951 


40961 


38611 


39558 


44298 


17808 


32251 


37675 


21744 


44413 


12 


14876 


27319 


25087 


41110 


38611 


42690 


35486 


23344 


31754 


32118 


29833 


48550 


13 


14783 


30090 


25146 


41446 


38647 


43567 


28093 


27380 


32451 


30380 


37175 


42880 


14 


15226 


31424 


26615 


41446 


40442 


42728 


32551 


32451 


28846 


31260 


42085 


39668 


15 


14760 


32954 


27689 


41297 


40812 


42010 


33697 


38647 


22748 


34346 


48230 


38539 


16 


14992 


28972 


27473 


41260 


37926 


38178 


34896 


45736 


24587 


36820 


42349 


40812 


17 


14829 


20092 


24383 


40331 


42425 


37854 


35486 


46681 


25831 


39521 


21855 


42766 


18 


14806 


25711 


22467 


40590 


46286 


37890 


36080 


37675 


29099 


43836 


21524 


46365 


19 


14992 


28973 


20252 


40516 


45854 


40072 


25592 


40368 


33833 


37747 


30380 


49680 


20 


14876 


33528 


19747 


37639 


44995 


42236 


18520 


37389 


35382 


21662 


36608 


43951 


21 


14713 


39375 


20439 


38142 


39815 


41036 


24499 


39741 


33868 


22833 


43070 


35660 


22 


14806 


41521 


22327 


40812 


32318 


35035 


29769 


42576 


18213 


28249 


46326 


41671 


23 


14783 


36115 


24353 


39558 


23088 


29769 


33392 


44220 


20600 


32786 


40109 


46208 


24 


15109 


31293 


24295 


39888 


24150 


29417 


35835 


38034 


26312 


39193 


23832 


49923 


25 


14806 


31688 


22077 


41222 


26312 


29577 


36502 


29099 


32418 


44762 


24675 


51602 


26 


14598 


35800 


26494 


40775 


27906 


28343 


37568 


20226 


38358 


47076 


33190 


47950 


27 


15132 


43299 


32019 


39962 


30802 


33970 


38070 


25981 


40590 


30640 


45112 


35347 


28 


14899 


37104 


31096 


39999 


32954 


33426 


33970 


32019 


34827 


34106 


45112 


26889 


29 


14876 


35975 


31359 


39083 





30445 


29865 


39705 


26433 


36080 


45345 


26798 


30 


14783 


32685 


32085 


39229 





25831 


27319 


44762 


27875 


40961 


36998 


30348 


31 


15914 





33970 


39778 


--- 


31556 


--- 


39120 


--- 


43951 


27782 


... 


MAX 


15914 


43299 


48270 


41446 


46286 


43567 


44298 


46681 


40590 


47076 


51644 


51602 


MIN 


14254 


20092 


19747 


37389 


23088 


22411 


18520 


17808 


18213 


21662 


19378 


23630 


a 


124.32 


130.16 


130.54 


132.18 


130.24 


129.82 


128.49 


132.00 


128.67 


133.29 


128.64 


129.45 


b 


tl43 


+16771 


*1285 


+ 5808 


-6824 


-1398 


-4237 


+11801 


-11245 


+16076 


-16169 


+ 2566 


c 


898 


497 


421 


354 


582 


963 


1365 


1751 


1848 


2312 


2171 


2029 



CAL YR 1996 b -10019 
WTR YR 1997 b +14577 



a Gage height, in feet, at end of month. 

b Change in contents, in acre-feet. 

c Evaporation, in acre-feet, provided by California Department of Water Resources; not reviewed by the U.S. Geological Survey. 



SACRAMENTO RIVER BASIN 
1 1406880 WESTERN CANAL AT INTAKE, NEAR OROVILLE, CA 



213 



LOCATION.-Lat 39°30'19", long 121°4r06", in SW 1/4 NW 1/4 sec.18, T.19 N., R.3 E., Butte County, Hydrologic Unit 18020105, on left bank 
500 ft downstream from Thermalito Afterbay Dam and 7.3 mi west of Oroville. 

PERIOD OF RECORD.-October 1967 to current year. 

GAGE.--Water-stage recorder. Datum of gage is 1 00.47 ft above sea level (levels by California Department of Water Resources). 

REMARKS. --Water is diverted from Thermalito Afterbay and is used for irrigation. See schematic diagram showing diversions and storage from 
Feather River at Lake Oroville. 

COOPERATION -Records collected by California Department of Water Resources, under general supervision of the U.S. Geological Survey, in 
connection with a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD.-Maximum daily discharge, 1,200 ft'/s. May 12, 1981, May 6, 7, 1984, May 6-8, 1990, May 3-5, 1994, 
May 10-13, 1996, May 3-9, 1997; no flow at times each year. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



OCT 



NOV 



DEC 



JAN 



FEB 



MAR 



APR 



MAY 



JtJN 



JUL 



1 


202 


518 


197 




.00 


.00 


.00 




.00 


1110 


783 


946 


878 


117 


2 


213 


518 


198 




.00 


.00 


.00 




.00 


1180 


773 


938 


878 


68 


3 


243 


518 


198 




.00 


.00 


.00 




.00 


1200 


759 


950 


878 


49 


i 


263 


502 


189 




.00 


.00 


.00 




.00 


1200 


720 


958 


878 


50 


5 


263 


488 


161 




.00 


.00 


.00 




.00 


1200 


684 


958 


859 


50 


6 


275 


488 


148 




.00 


.00 


.00 




.00 


1200 


673 


958 


848 


49 


7 


297 


505 


146 




.00 


.00 


.00 




.00 


1200 


673 


958 


849 


50 


8 


307 


518 


146 




.00 


.00 


.00 




.00 


1200 


701 


981 


831 


50 


9 


308 


507 


120 




.00 


.00 


.00 




.00 


1200 


765 


998 


805 


50 


10 


321 


497 


75 




.00 


.00 


.00 


28 




1140 


830 


987 


797 


50 


11 


338 


446 


43 




.00 


.00 


.00 


47 




1070 


859 


978 


788 


50 


12 


338 


367 


30 




.00 


.00 


.00 


47 




1020 


885 


978 


779 


38 


13 


338 


321 


29 




.00 


.00 


.00 


46 




939 


898 


978 


767 


30 


14 


399 


298 


30 




.00 


.00 


.00 


78 




844 


883 


979 


746 


30 


15 


469 


298 


31 




.00 


.00 


.00 


98 




767 


882 


966 


739 


30 


16 


507 


298 


57 




.00 


.00 


.00 


121 




748 


898 


958 


722 


30 


17 


535 


297 


77 




.00 


.00 


.00 


182 




729 


898 


958 


712 


30 


18 


548 


202 


77 




.00 


.00 


.00 


198 




697 


898 


946 


667 


30 


19 


534 


148 


78 




.00 


.00 


.00 


197 




730 


899 


926 


606 


50 


20 


518 


148 


76 




.00 


.00 


.00 


197 




773 


899 


917 


562 


50 


21 


517 


149 


78 




.00 


.00 


.00 


169 




763 


898 


919 


454 


84 


22 


532 


147 


77 




.00 


.00 


.00 


180 




748 


904 


906 


379 


108 


23 


580 


146 


77 




.00 


.00 


.00 


213 




687 


918 


882 


323 


125 


24 


624 


146 


79 




.00 


.00 


.00 


223 




647 


918 


856 


297 


150 


25 


654 


148 


78 




.00 


.00 


.00 


313 




616 


918 


858 


287 


158 


26 


668 


151 


65 




.00 


.00 


.00 


530 




597 


918 


859 


251 


158 


27 


668 


155 


18 




.00 


.00 


.00 


734 




607 


927 


857 


211 


157 


28 


668 


173 




00 


.00 


.00 


.00 


838 




686 


938 


858 


179 


158 


29 


656 


172 




00 


.00 


— 


.00 


930 




760 


938 


871 


159 


158 


30 


587 


189 




00 


.00 


— 


.00 


996 




798 


950 


878 


147 


174 


31 


531 


--- 




00 


.00 


— 


.00 




--- 


798 





878 


147 





TOTAL 


13901 


9458 


2578. 


00 


0.00 


0.00 


0.00 


6365 


.00 


27854 


25487 


28838 


18423 


2381 


MEAN 


448 


315 


83 


1.2 


.000 


.000 


.000 


212 


899 


850 


930 


594 


79.4 


MAX 


668 


518 


198 


.00 


.00 


.00 


996 


1200 


950 


998 


878 


174 


MIN 


202 


146 




00 


.00 


.00 


.00 




.00 


597 


673 


856 


147 


30 


AC -FT 


27570 


18760 


5110 


.00 


.00 


.00 


12620 


55250 


50550 


57200 


36540 


4720 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1968 - 1997, BY WATER YEAR (WY) 



MEAN 


259 


229 


110 


25.8 


.000 


.45 


151 


683 


694 


775 


651 


166 


MAX 


539 


607 


365 


155 


.000 


12.4 


566 


930 


959 


1032 


890 


305 


(WY) 


1975 


1975 


1977 


1977 


1968 


1972 


1977 


1985 


1981 


1981 


1981 


1995 


MIN 


95.2 


38.9 


.000 


.000 


.000 


.000 


1.00 


271 


477 


504 


456 


49.9 


(WY) 


1990 


1974 


1971 


1969 


1968 


1968 


1982 


1995 


1983 


1970 


1970 


1977 



SUMMARY STATISTICS 



FOR 199 6 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1968 - 1997 



ANNUAL 


TOTAL 


126850, 


,00 






135285 


.00 
















ANNUAL 


MEAN 


347 








371 








314 










HIGHEST ANNUAL MEAN 


















403 








1981 


LOWEST 


ANNUAL MEAN 


















217 








1983 


HIGHEST DAILY MEAN 


1200 




May 


10 


1200 




May 


3 


1200 




May 


12 


1981 


LOWEST 


DAILY MEAN 




,00 


Jan 


11 




.00 


Dec 


28 




,00 


Dec 


4 


1967 


ANNUAL 


SEVEN-DAY MINIMtWl 




,00 


Jan 


11 




.00 


Dec 


28 




00 


Jan 


5 


1968 


ANNUAL 


RUNOFF (AC-FT) 


251600 








268300 








227200 










10 PERCENT EXCEEDS 


923 








928 








826 










50 PERCENT EXCEEDS 


193 








189 








206 










90 PERCENT EXCEEDS 




,00 








.00 








00 









214 



SACRAMENTO RTVER BASIN 
1 1406890 RICHVALE CANAL AT INTAKE, NEAR OROVILLE, CA 



LOCATION.--Lat 39°30' 1 9". long 1 2 1 °41 ' 06", in SW 1/4 NW 1/4 sec. 1 8, T. 19 N., R.3 E., Butte County, Hydrologic Unit 1 8020105, on right bank 
500 ft downstream from axis of Thermalito Afterbay Dam and 7.3 mi west of Oroville. 

PERIOD OF RECORD.-April 1968 to current year. 

REVISED RECORDS.--WDRCA-91-4; 1990. 

GAGE. --Water-stage recorder. Datimi of gage is 100.47 ft above sea level flevels by California Etepartment of Water Resources). 

REMARKS. -Canal diverts from Thermalito Afterbay; water is used for irrigation. See schematic diagram showing diversions and storage from 
Feather River at Lake Oroville. 

COOPERATION. -Records collected by California Department of Water Resources, under general supervision of the U.S. Geological Survey, in 
connection with a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD.-Maximum daily discharge, 511 ft'/s. May 16, 1974; no flow for many days each year. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN V/U-UES 



OCT 



NOV 



DEC 



JAN 



MAR 



APR 



HAY 



JVN 



JUL 



1 


10 


239 


272 


76 




.00 


.00 


.00 


394 


281 


403 


389 


90 


2 


10 


238 


274 




.00 


.00 


.00 


.00 


393 


284 


404 


388 


84 


3 


10 


238 


275 




,00 


.00 


.00 


.00 


392 


307 


404 


386 


74 


i 


10 


238 


275 




.00 


.00 


.00 


.00 


351 


319 


403 


389 


59 


5 


10 


262 


274 




.00 


.00 


.00 


.00 


334 


318 


403 


389 


48 


6 


10 


273 


275 


22 




.00 


.00 


.00 


334 


319 


403 


375 


41 


7 


36 


273 


272 


50 




.00 


.00 


.00 


374 


319 


404 


369 


44 


8 


70 


273 


274 


64 




.00 


.00 


.00 


424 


323 


404 


361 


45 


9 


93 


272 


273 


80 




.00 


.00 


.00 


439 


329 


404 


350 


28 


10 


113 


272 


255 


83 




.00 


.00 


29 


418 


335 


403 


346 


15 


11 


125 


274 


241 


83 




.00 


.00 


51 


386 


346 


403 


342 


15 


12 


128 


273 


239 


83 




.00 


.00 


67 


379 


361 


402 


325 


5.8 


13 


128 


274 


235 


83 




.00 


.00 


107 


379 


375 


403 


309 


.00 


14 


129 


274 


235 


92 




.00 


.00 


208 


379 


378 


403 


304 


.00 


15 


191 


273 


235 


99 




.00 


.00 


220 


379 


388 


404 


294 


.00 


16 


246 


272 


235 


98 




.00 


.00 


213 


367 


400 


404 


278 


.00 


17 


279 


272 


234 


98 




.00 


.00 


214 


338 


404 


404 


271 


.00 


18 


288 


274 


235 


98 




.00 


.00 


214 


296 


404 


403 


274 


.00 


19 


289 


273 


235 


98 




.00 


.00 


220 


284 


404 


403 


254 


.00 


20 


288 


274 


235 


98 




.00 


.00 


199 


294 


404 


401 


234 


.00 


21 


258 


273 


235 


99 




.00 


.00 


184 


299 


403 


404 


229 


.00 


22 


208 


274 


233 


101 




.00 


.00 


184 


305 


394 


404 


228 


.00 


23 


201 


272 


235 


100 




.00 


.00 


212 


329 


394 


404 


205 


15 


24 


228 


273 


235 


55 




.00 


.00 


223 


312 


394 


403 


192 


32 


25 


238 


274 


231 




.00 


.00 


.00 


243 


262 


394 


404 


176 


35 


26 


238 


274 


232 




.00 


.00 


.00 


254 


246 


394 


403 


169 


35 


27 


238 


274 


233 




,00 


.00 


.00 


298 


249 


393 


401 


152 


35 


28 


238 


272 


233 




,00 


.00 


.00 


388 


249 


393 


396 


130 


35 


29 


238 


273 


233 




.00 





.00 


423 


265 


400 


389 


125 


42 


30 


238 


272 


232 




,00 





.00 


407 


281 


400 


389 


110 


54 


31 


238 





236 




00 


— 


.00 





283 





389 


102 





TOTAL 


5024 


8042 


7646 


1660. 


00 


0.00 


0.00 


4558.00 


10414 


10957 


12451 


8445 


831.80 


MEAN 


162 


268 


247 


53 


1.5 


.000 


.000 


152 


336 


365 


402 


272 


27.7 


MAX 


289 


274 


275 


101 


.00 


.00 


423 


439 


404 


404 


389 


90 


MIN 


10 


238 


231 




,00 


.00 


.00 


.00 


246 


281 


389 


102 


.00 


AC -FT 


9970 


15950 


15170 


3290 


.00 


.00 


9040 


20660 


21730 


24700 


16750 


1650 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1968 - 1997, BY WATER YEAR (WY) 



MEAN 


22.4 


45.3 


39.5 


9.90 


.000 


.26 


71.8 


279 


287 


310 


268 


73.0 


MAX 


162 


268 


247 


84.3 


.000 


6.32 


201 


436 


400 


402 


373 


154 


{WY) 


1997 


1997 


1997 


1996 


1969 


1972 


1972 


1974 


1979 


1997 


1974 


1995 


HIN 


.000 


.000 


.000 


.000 


.000 


.000 


.000 


104 


129 


140 


130 


8.43 


(WY) 


1972 


1969 


1969 


1969 


1969 


1969 


1983 


1991 


1991 


1991 


1991 


1977 



SUMMARY STATISTICS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1968 - 1997 



ANNUAL TOTAL 


66752, 


.70 






70028 


.80 












ANNUAL MEAN 


182 








192 








119 






HIGHEST ANNUAL MEAN 


















192 




1997 


LOWEST ANNUAL MEAN 


















66.4 




1991 


HIGHEST DAILY MEAN 


439 




May 


13 


439 




May 


9 


511 


May 16 


1974 


LOWEST DAILY MEAN 




.00 


Jan 


20 




,00 


Jan 


2 


.00 


Sep 2 5 


1968 


ANNUAL SEVEN-DAY MINIMUM 




.00 


Jan 


20 




,00 


Jan 


25 


.00 


Oct 5 


1968 


ANNUAL RUNOFF (AC- FT) 


132400 








138900 








86200 






10 PERCENT EXCEEDS 


374 








401 








351 






50 PERCENT EXCEEDS 


230 








235 








38 






90 PERCENT EXCEEDS 




,00 








,00 






.00 







SACRAMENTO RIVER BASIN 
1 1406900 PACIFIC GAS & ELECTRIC CO. LATERAL AT INTAKE, NEAR OROVILLE, CA 



215 



LOCATION.--Ut 39°29'22", long 12r4r 12", in SE 1/4 NW 1/4 sec.l9, T.19 N., R.3 E., Bune County. Hydrologic Unit 18020106, on right bank 
82 ft downstream from axis of Thermalito Afterbay Dam and 7.2 mi west of Oroville. 

PERIOD OF RECORD.-April 1968 to current year. 

GAGE.--Water-stage recorder. Datum of gage is 1 13.47 ft above sea level Oevels by Califomia Department of Water Resources). 

REMARKS. --Flow regulated at outlet works bom Thermalito Afterbay; water is used for irrigation. See schematic diagram showing diversions and 
storage from Feather River at Lake Oroville. 

COOPERATION— Records collected by Califomia Department of Water Resources, under general supervision of the U.S. Geological Survey, in 
connection with a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD.-Maximum daUy discharge, 46 ft'/s, Apr. 24, 1977, May 16, 1978; no flow for many days each year. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



DAY 



FEB 



AUG 



SEP 



1 


.00 


.81 


1.2 


.00 


.00 


.00 




.00 


9.5 


22 


16 


15 


.00 


2 


.00 


.87 


1.2 


.00 


.00 


.00 




.00 


6.5 


22 


16 


15 


.00 


3 


.00 


.88 


1.3 


.00 


.00 


.00 




.00 


3.4 


23 


16 


15 


.00 


4 


.00 


.88 


1.4 


.00 


.00 


.00 




.00 


2.7 


22 


16 


14 


.00 


5 


.00 


.90 


1.4 


.00 


.00 


.00 




.00 


11 


17 


16 


13 


.00 


6 


.00 


.94 


1.5 


.00 


.00 


.00 




.00 


17 


14 


16 


13 


.00 


7 


.00 


1.0 


1.4 


.00 


.00 


.00 




.00 


13 


12 


15 


12 


.00 


B 


.00 


1.0 


1.3 


.00 


.00 


.00 




.00 


5.2 


8.8 


15 


12 


.00 


9 


.00 


.99 


1.2 


.00 


.00 


.00 




.00 


2.1 


9.9 


15 


12 


.00 


10 


.00 


1.2 


1.1 


.00 


.00 


.00 




.00 


1.0 


11 


15 


12 


.00 


H 


9.4 


1.2 


.49 


.00 


.00 


.00 




.00 


.00 


14 


15 


11 


.00 


12 


15 


1.3 


.00 


.00 


.00 


.00 




.00 


.80 


16 


15 


11 


.00 


13 


15 


1.3 


.00 


.00 


.00 


.00 




.00 


3.0 


16 


15 


9.8 


.00 


14 


15 


1.3 


.00 


.00 


.00 


.00 




.00 


6.3 


17 


15 


8.8 


.00 


15 


15 


1.2 


.00 


.00 


.00 


.00 




.00 


8.4 


16 


15 


9.1 


.00 


16 


15 


1.2 


.65 


.00 


.00 


.00 




.00 


9.0 


15 


15 


8.8 


.00 


17 


9.6 


1.0 


1.1 


.00 


.00 


.00 




.00 


10 


15 


15 


8.6 


.00 


18 


2.5 


.94 


.98 


.00 


.00 


.00 




.00 


12 


14 


15 


6.3 


.00 


19 


1.0 


1.0 


.96 


.00 


.00 


.00 


11 




13 


14 


15 


5.0 


.00 


20 


.99 


1.2 


.90 


.00 


.00 


.00 


17 




13 


15 


15 


4.9 


.00 


21 


.90 


1.3 


.92 


.00 


.00 


.00 


17 




8.0 


15 


15 


4.1 


.00 


22 


.98 


1.3 


.95 


.00 


.00 


.00 


32 




4.5 


15 


15 


2.5 


.00 


23 


.97 


1.3 


1.0 


.00 


.00 


.00 


43 




3.1 


15 


15 


1.2 


.00 


24 


.93 


1.3 


1.1 


.00 


.00 


.00 


40 




1.4 


16 


15 


1.1 


.00 


25 


.90 


1.2 


1.0 


.00 


.00 


.00 


38 




1.6 


17 


15 


.42 


.00 


26 


.82 


1.3 


1.0 


.00 


.00 


.00 


34 




1.2 


17 


15 


.00 


.00 


27 


.79 


1.3 


.43 


.00 


.00 


.00 


23 




1.4 


17 


14 


.00 


.00 


28 


.73 


1.3 


.00 


.00 


.00 


.00 


17 




3.0 


17 


15 


.00 


.00 


29 


.70 


1.3 


.00 


.00 





.00 


18 




9.4 


17 


15 


.00 


.00 


30 


.70 


1.3 


.00 


.00 





.00 


14 




15 


17 


15 


.00 


.00 


31 


.72 





.00 


.00 


— 


.00 




— 


19 





15 


.00 


— 


TOTAL 


107.63 


34.01 


24.48 


0.00 


0.00 


0.00 


304 


.00 


214.50 


476.7 


470 


225.62 


0.00 


MEAN 


3.47 


1.13 


.79 


.000 


.000 


.000 


10.1 


6.92 


15.9 


15.2 


7.28 


.000 


MAX 


15 


1.3 


1.5 


.00 


.00 


.00 




43 


19 


23 


16 


15 


.00 


MIN 


.00 


.81 


.00 


.00 


.00 


.00 




.00 


.00 


8.8 


14 


.00 


.00 


AC -FT 


213 


67 


49 


.00 


.00 


.00 


( 


503 


425 


946 


932 


448 


.00 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1968 - 1997, BY WATER YEAR (WY) 



MEAN 


.21 


1.53 


.68 


.059 


.000 


.000 


3.77 


12.8 


12.6 


13.3 


10.6 


1.23 


MAX 


3.47 


6.58 


3.49 


.51 


.000 


.000 


14.8 


23.2 


18.3 


17.1 


13.9 


2.62 


(WY) 


1997 


1996 


1987 


1994 


1969 


1969 


1977 


1975 


1981 


1981 


1995 


1972 


HIN 


.000 


.000 


.000 


.000 


.000 


.000 


.000 


6.55 


8.60 


9.37 


7.12 


.000 


(WY) 


1969 


1969 


1969 


1969 


1969 


1969 


1974 


1994 


1993 


1970 


1988 


1994 



StTMMARY STATISTICS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1968 - 1997 



ANNUAL TOTAL 


1725.12 






1856.94 














ANNUAL MEAN 


4.71 






5.09 






4.79 








HIGHEST ANNUAL MEAN 














5.93 






1981 


LOWEST ANNUAL MEAN 














3.67 






1983 


HIGHEST DAILY MEAN 


34 


May 


9 


43 


Apr 


23 


46 


Apr 


24 


1977 


LOWEST DAILY MEAN 


.00 


Jan 


1 


.00 


Oct 


1 


.00 


Sep 


9 


1968 


ANNUAL SEVEN-DAY MINIMUM 


.00 


Jan 


1 


.00 


Oct 


1 


.00 


Sep 


9 


1968 


ANNUAL RUNOFF (AC -FT) 


3420 






3680 






3470 








10 PERCENT EXCEEDS 


15 






15 






15 








50 PERCENT EXCEEDS 


.90 






.92 






.00 








90 PERCENT EXCEEDS 


.00 






.00 






.00 









216 



SACRAMENTO RIVER BASIN 
1 1406910 SUTTER-BUTTE CANAL AT INTAKE, NEAR OROVILLE. CA 



LOCATION.-Lat 39°27'01". long 12r39'27", in NW comer of Boga Fernandez Grant, T.l 8 N., R.3 E., Butte County, Hydrologic Unit 18020105. 
on left bank 675 ft downstream from Thermalito Afterbay Dam and 6 8 mi southwest of Oroville 

PERIOD OF RECORD-November 1967 to current year 

GAGE.--Water-stage recorder. Datum of gage is 1 09.97 ft above sea level (levels by California Depanment of Water Resources). Prior to May 1 , 
1970, at datum 109.50 ft lower. 

REMARKS. -Water is diverted from Thermalito Afterbay and is used for irrigation. See schematic diagram showing diversions and storage from 
Feather River at Lake Oroville. 

COOPERATION. --Records collected by California Department of Water Resources, under general supervision of the U.S. Geological Survey, in 
connection with a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD.-Maximum daily discharge, 2,110 ft^/s, Apr. 22-24. 1968; no flow for many days each year. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



DAY 



OCT 



NOV 



DEC 



JAN 



MAR 



APR 



MAY 



JUN 



JUL 



AUG 



1 


449 


341 


419 


79 




.00 




.00 


319 


1690 


1420 


1550 


1370 


781 


2 


440 


406 


418 




.00 


.00 




.00 


326 


1680 


1380 


1550 


1360 


764 


3 


438 


420 


417 




.00 


.00 




.00 


339 


1670 


1380 


1560 


1380 


773 


4 


436 


435 


405 




.00 


.00 




.00 


339 


1670 


1370 


1520 


1380 


806 


5 


430 


433 


407 




.00 


.00 




.00 


353 


1660 


1330 


1510 


1380 


819 


6 


428 


427 


401 


33 




.00 




.00 


396 


1670 


1300 


1520 


1370 


762 


7 


432 


418 


400 


64 




.00 




.00 


392 


1700 


1300 


1520 


1360 


733 


8 


442 


424 


399 


76 




.00 




.00 


501 


1710 


1310 


1530 


1380 


695 


9 


420 


436 


385 


84 




.00 




.00 


561 


1710 


1330 


1560 


1410 


638 


10 


411 


439 


354 


87 




.00 




.00 


588 


1670 


1390 


1560 


1400 


578 


11 


455 


441 


327 


112 




.00 




.00 


583 


1630 


1450 


1530 


1390 


562 


12 


468 


441 


341 


122 




.00 




.00 


592 


1640 


1490 


1510 


1360 


537 


13 


484 


471 


343 


132 




.00 


172 




604 


1630 


1500 


1500 


1320 


526 


14 


539 


506 


368 


142 




.00 


236 




647 


1570 


1460 


1490 


1310 


506 


15 


560 


522 


377 


108 




.00 


247 




698 


1530 


1460 


1500 


1300 


493 


16 


627 


521 


380 




.00 


.00 


232 




806 


1450 


1440 


1520 


1260 


466 


17 


645 


519 


378 




.00 


.00 


186 




903 


1410 


1490 


1530 


1250 


440 


IS 


645 


515 


379 




.00 


.00 


203 




1060 


1370 


1500 


1530 


1230 


412 


19 


602 


526 


379 




.00 


.00 


216 




1090 


1360 


1490 


1510 


1220 


396 


20 


555 


513 


379 




.00 


.00 


203 




1030 


1390 


1480 


1500 


1170 


410 


21 


550 


492 


381 




.00 


.00 


203 




999 


1460 


1470 


1470 


1120 


426 


22 


549 


472 


382 




.00 


.00 


186 




1040 


1460 


1460 


1440 


1040 


431 


23 


558 


476 


383 




.00 


.00 


187 




1210 


1430 


1460 


1420 


1000 


448 


24 


574 


472 


382 




.00 


.00 


185 




1290 


1370 


1470 


1410 


971 


445 


25 


560 


471 


380 




.00 


.00 


186 




1260 


1310 


1510 


1440 


955 


446 


26 


580 


453 


381 




.00 


.00 


244 




1340 


1280 


1570 


1450 


910 


468 


27 


586 


436 


352 




.00 


.00 


229 




1470 


1300 


1610 


1420 


853 


473 


28 


578 


421 


301 




.00 


.00 


235 




1570 


1350 


1610 


1420 


829 


496 


29 


568 


427 


269 




.00 


— 


243 




1630 


1400 


1580 


1410 


827 


499 


30 


514 


429 


277 




.00 


— 


246 




1700 


1410 


1570 


1390 


606 


501 


31 


442 





238 




.00 


— 


263 







1420 





1380 


787 





TOTAL 


15965 


13703 


11382 


1039 


.00 


0.00 


4102 


.00 


25636 


47000 


43580 


46150 


36698 


16730 


MEAN 


515 


457 


367 


33.5 


.000 


132 


855 


1516 


1453 


1489 


1184 


558 


MAX 


645 


526 


419 


142 


.00 


263 


1700 


1710 


1610 


1560 


1410 


819 


MIN 


411 


341 


238 




.00 


.00 




.00 


319 


1280 


1300 


1380 


787 


396 


AC -FT 


31670 


27180 


22580 


2060 


.00 


8140 


50850 


93220 


86440 


91540 


72790 


33180 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1968 - 1997, BY WATER YEAR (WY) 



MEAN 


371 


121 


89.3 


20.2 


25.1 


101 


564 


1405 


1383 


1473 


1353 


720 


MAX 


661 


527 


412 


216 


374 


571 


1294 


1815 


1643 


1709 


1608 


893 


(WY) 


1975 


1996 


1996 


1996 


1977 


1976 


1968 


1975 


1975 


1981 


1982 


1995 


HIN 


77.2 


.000 


.000 


.000 


.000 


.000 


.000 


519 


826 


834 


776 


283 


(WY) 


1978 


1975 


1971 


1969 


1969 


1978 


1983 


1977 


1992 


1991 


1991 


1977 



SUMMARY STATISTICS 

ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
ANNUAL RUNOFF (AC-FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



FOR 19 96 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1968 - 1997 



248659. 


00 






261985, 


.00 












679 








718 








636 
765 
401 




1976 
1992 


1730 




May 


13 


1710 




May 


8 


2110 


Apr 22 


1968 




,00 


Jan 


20 




,00 


Jan 


2 


.00 


Jan 8 


1968 




.00 


Jan 


20 




,00 


Jan 


16 


.00 


Jan 8 


1968 


493200 








519600 








461100 






1570 








1510 








1560 






462 








506 








411 







.00 



.00 



.00 



SACRAMENTO RP/ER BASIN 
1 1406920 THERMALITO AFTERBAY RELEASE TO FEATHER RIVER, NEAR OROVILLE, CA 



217 



LOCATION.--Lat 39°27'23", long Ul^BS' 10", in NW 1/4 SE 1/4 sec.33, T.19 N., R.3 E., Butte County, Hydrologic Unit 18020106, on left bank 

of outlet channel 955 ft downstream from centerline of Thermalito Afterbay Dam and 5.7 mi southwest of Oroville. 
PERIOD OF RECORD-November 1967 to current year. 
WATER TEMPERATURE: Water years 1969-92. 

GAGE. --Water-stage recorder. Datum of gage is 1 1 3.47 ft above sea level (levels by California Department of Water Resources). Prior to May 1 , 
1970, at datum 13.00 ft lower. 

REMARKS. -Flow regulated by gates of Thermalito Afterbay outlet 955 ft upstream. See schematic diagram showing diversions and storage from 
Feather River at Lake Oroville. 

COOPERATION— Records collected by California Department of Water Resources, under general supervision of the U.S. Geological Survey, in 
connection with a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 21,600 ft^/s, Jan. 28, 1970, gage height, 23.30 ft, datum then in use, 
21,600 ft^/s, Jan. 2, 1997, gage height, 1 1.45 ft; no flow for many days during 1968. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



OCT 



NOV 



DEC 



JAN 



FEB 



MAR 



APR 



MAY 



JUN 



JUL 



1 


1180 


345 


788 


11200 


16700 


10400 


1290 


570 


2380 


6930 


6390 


1890 


2 


1180 


792 


792 


11100 


16600 


10400 


1280 


571 


2380 


6930 


6400 


1890 


3 


1180 


790 


791 


16200 


13800 


9930 


1080 


571 


2140 


6920 


6400 


1680 


4 


1370 


789 


791 


16100 


12600 


7950 


872 


570 


1890 


6920 


6400 


1480 


5 


1570 


794 


1710 


16200 


12600 


5930 


674 


572 


1890 


6920 


6390 


1290 


6 


1780 


791 


4420 


16100 


12600 


4030 


574 


573 


1850 


6920 


6390 


1180 


7 


1780 


785 


4440 


16100 


12600 


2520 


573 


571 


1650 


6920 


6140 


1170 


8 


1780 


791 


4420 


16100 


12600 


2390 


571 


571 


1480 


6920 


5380 


1180 


9 


1780 


786 


4430 


16100 


12600 


2390 


575 


570 


1620 


6930 


4640 


1180 


10 


1780 


786 


8920 


16500 


12600 


2180 


573 


567 


2130 


6920 


3640 


1170 


11 


1780 


789 


15000 


16600 


12600 


1680 


572 


566 


2390 


6920 


3380 


1180 


12 


1780 


787 


16000 


16600 


12600 


1480 


571 


571 


2390 


6920 


2890 


1180 


13 


1780 


791 


15300 


16600 


12000 


1280 


569 


574 


2390 


6920 


2880 


1190 


14 


1780 


788 


15100 


16700 


10500 


1270 


572 


575 


2630 


6930 


2740 


1190 


15 


1780 


790 


15100 


16600 


8450 


1280 


570 


571 


3110 


6920 


2380 


1190 


16 


1240 


791 


14600 


16100 


6420 


1280 


573 


570 


3400 


6920 


3110 


1190 


17 


792 


789 


13000 


14000 


5420 


1280 


571 


569 


3390 


6920 


3870 


1190 


18 


791 


791 


13000 


12500 


5410 


1280 


571 


570 


3390 


6920 


4130 


1180 


19 


796 


793 


13000 


12500 


5410 


1280 


570 


740 


3400 


6910 


3150 


1180 


20 


793 


792 


12400 


12500 


6400 


1280 


568 


1590 


3400 


6900 


2560 


1180 


21 


793 


788 


11600 


12500 


7920 


1280 


572 


2050 


3400 


6910 


2390 


1170 


22 


791 


789 


11000 


12500 


8440 


1270 


573 


2390 


3390 


6920 


3130 


1180 


23 


790 


787 


10400 


13500 


8430 


1270 


572 


2390 


3400 


6920 


3510 


1180 


24 


789 


780 


9400 


14100 


8440 


1280 


572 


2380 


3900 


6920 


4390 


1430 


25 


785 


794 


8380 


14300 


8440 


1280 


572 


2380 


3900 


6410 


4120 


2180 


26 


590 


794 


7630 


14500 


8440 


1270 


570 


2380 


4150 


6410 


3140 


2180 


27 


401 


794 


11300 


14300 


9430 


1280 


570 


2390 


4900 


6400 


2400 


2430 


28 


138 


789 


15900 


14100 


10500 


1280 


570 


2390 


5900 


6410 


1880 


3180 


29 


56 


796 


15700 


14100 





1280 


569 


2390 


6900 


6410 


1890 


3440 


30 


53 


790 


15600 


14100 





1280 


571 


2390 


6930 


6420 


1890 


3700 


31 


35 


... 


16100 


15400 





1290 





2390 





6420 


1890 





TOTAL 


33913 


23251 


307012 


455800 


290550 


85570 


19480 


38522 


96070 


210960 


119890 


48030 


MEAN 


1094 


775 


9904 


14700 


10380 


2760 


649 


1243 


3202 


6805 


3867 


1601 


MAX 


1780 


796 


16100 


16700 


16700 


10400 


1290 


2390 


6930 


6930 


6400 


3700 


MIN 


35 


345 


788 


11100 


5410 


1270 


568 


566 


1480 


6400 


1880 


1170 


AC -FT 


67270 


46120 


609000 


904100 


576300 


169700 


38640 


76410 


190600 


418400 


237800 


95270 


STATISTICS OF 


MONTHLY MEAN DATA 


FOR WATER 


YEARS 1968 


- 1997 


, BY WATER 


YEAR (WY) 










MEAN 


1914 


2420 


4166 


4627 


4941 


5524 


4567 


3514 


3034 


3670 


3389 


2844 


MAX 


5867 


11020 


15120 


14700 


14600 


16890 


15410 


12340 


9717 


6805 


7043 


7085 


(WY) 


1975 


1974 


1984 


1997 


1983 


1983 


1983 


1983 


1983 


1997 


1974 


1974 


MIN 


145 


336 


56.7 


391 


345 


239 


207 


549 


337 


.13 


116 


398 


(WY) 


1978 


1978 


1968 


1993 


1968 


1992 


1992 


1977 


1990 


1968 


1968 


1968 


SUMMARY STATISTICS 


FOR 


1996 CALENDAR YEAR 




FOR 1997 WATER YEAR 




WATER 


YEARS 1968 - 1997 


ANNUAL 


TOTAL 






2115868 






1729048 












ANNUAL 


MEAN 






5781 






4737 






3815 






HIGHEST ANNUAL MEAN 
















9352 




1983 


LOWEST 


ANNUAL 


MEAN 
















970 




1991 


HIGHEST DAILY 


MEAN 




16100 


Dec 31 




16700 


Jan 14 




21200 


Jan 


28 1970 


LOWEST 


DAILY MEAN 




35 


Oct 31 




35 


Oct 31 






00 Nov 


16 1967 


ANNUAL 


SEVEN-DAY MINIMUM 




231 


Oct 2 6 




231 


Oct 26 






00 Nov 


16 1967 


INSTANTANEOUS 


PEAK FLOW 










21600 


Jan 2 




21600 


Jan 


28 1970 


INSTANTANEOUS 


PEAK STAGE 










11.45 


Jan 2 




23. 


30 Jan 


28 1970 


ANNUAL 


RUNOFF 


(AC-FT) 




4197000 






3430000 






2764000 






10 PERCENT EXCEEDS 




13500 






13600 






9320 






50 PERCENT EXCEEDS 




5410 






2380 






2220 






90 PERCENT EXCEEDS 




792 






572 






492 







218 



SACRAMENTO RIVER BASIN 
1 1407000 FEATHER RIVER AT OROVILLE, CA 



LOCATION.--Lat 39''3r 18", long 121°32'48". in Boga Fernandez Grant, T. 19 N., R.4 E., Bune County. Hydrologic Unit 18020106, on right bank 
300 ft upstream from fish barrier dam on Feather River, 0.4 mi downstream from Thermalito Diversion Dam, 0.8 mi northeast of Oroville Post 
Office, and 4.8 mi downstream from Oroville Dam. 

DRAINAGE AREA.--3,624 mi". 

PERIOD OF RECORD.-October 1901 to current year. Monthly discharge only for some periods, published in WSP 1315-A. October 1934 to 
September 1961 published as "near Oroville." 
CHEMICAL DATA: Water years 1906-07. 1951-77. 
SPECinC CONDUCTANCE: Water years 1972-78. 
WATER TEMPERATURE: Water years 1954-92. 
SEDIMENT DATA: Water years 1957-79. 

REVISED RECORDS.-WSP 843: 1907(M), 1909(M), 1914-15(M), 1919(M). 1927-28(M). WSP 881: 1913-28 (yearly summaries). WSP 1515: 
1906-8. WSP 1931: Drainage area. WDR CA-74-2: 1968-70. adjusted monthly discharge. 

GAGE. -Water-stage recorder. Datum of gage is 148.97 ft above sea level (levels by California Department of Water Resources). See WSP 193 1 

forhistory of changes prior to Oct. 1. 1964. 

REMARKS— Flow completely regulated by Lake Oroville (station 1 1406800) beginning November 1967, and Thermalito Diversion Pool (station 
1 1406825), capacity 13.500 acre-ft. Diversions upstream from station for power and irrigation. Feather River Fish Hatchery diverts up to 
120 ft-'/s at Thermalito Diversion Dam 0.4 mi upstream from gage. Daily figures shown are combined figures of river flow and diversion to 
fish hatchery. See schematic diagram showing diversions and storage from Feather River at Lake Oroville. 

COOPERATION. -Records were collected by California Department of Water Resources, under general supervision of the U.S. Geological Survey, 
in connection with a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD.-Prior to completion of Oroville Dam: Maximum discharge observed, 230,000 ft^/s Mar. 19, 1907, 
elevation, 167.5 ft above sea level, site and datum then in use, maximum discharge (since completion of Oroville Dam), 161,000 ft^/s, 
Jan. 2, 1997, gage height 25.45 ft; minimum, 300 ft^/s, estimated, Nov. 9, 1931. 
Combined flow (since completion of Oroville Dam): Maximum daily discharge, 132,000 ft^/s, Feb. 18, 1986; minimum daily, 222 ft^/s, 
Sept. 19, 1972. 

EXTREMES FOR CURRENT YEAR.-River only: Maximum discharge, 161,000 ft^/s, Jan. 2. gage height, 25.45 ft; minimum daily, 510 ft^/s, 
Jan. 19 
Combined flow: Maximum daily discharge, 126.000 fr'/s, Jan. 2; minimum daily, 601 ft^/s, Feb. 22, 23. 

DISCHARGE, CUBIC FEET PER SECOND. WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



OCT 



NOV 



DEC 



JAN 



FEB 



MAR 



MAY 



JUN 



JUL 



1 


619 


1750 


1670 


122000 


13600 


619 


633 


629 


650 


638 


666 


620 


2 


615 


1670 


1670 


126000 


13600 


618 


623 


602 


637 


638 


661 


613 


3 


623 


1670 


1690 


94800 


16700 


622 


621 


621 


652 


635 


660 


608 


4 


623 


1670 


1700 


86900 


17600 


629 


624 


625 


651 


637 


661 


610 


5 


624 


1620 


1670 


76000 


16600 


631 


621 


623 


650 


622 


661 


612 


6 


624 


1620 


1670 


64700 


14600 


631 


620 


624 


639 


626 


650 


617 


7 


622 


1620 


1670 


50400 


12500 


632 


622 


624 


637 


626 


650 


609 


8 


623 


1620 


1670 


35300 


10600 


631 


621 


623 


630 


625 


650 


615 


9 


623 


1610 


1680 


29100 


8590 


629 


622 


623 


631 


625 


649 


616 


10 


624 


1600 


1700 


22500 


6510 


631 


622 


624 


637 


629 


648 


604 


11 


622 


1620 


4970 


12300 


4600 


629 


621 


624 


641 


628 


649 


602 


12 


623 


1620 


8640 


6060 


2600 


623 


618 


622 


639 


627 


651 


627 


13 


625 


1620 


9320 


3530 


1100 


629 


622 


624 


638 


628 


641 


644 


14 


624 


1620 


9520 


3540 


618 


629 


619 


634 


638 


627 


646 


648 


15 


625 


1650 


9540 


2610 


615 


639 


620 


625 


639 


635 


646 


645 


16 


1340 


1610 


6020 


972 


614 


648 


618 


626 


637 


638 


634 


657 


17 


1640 


1610 


1610 


617 


615 


644 


615 


627 


646 


637 


640 


646 


18 


1610 


1600 


1660 


606 


615 


634 


635 


638 


644 


620 


628 


645 


19 


1580 


1620 


1660 


602 


614 


633 


637 


635 


645 


622 


629 


638 


20 


1610 


1650 


1620 


640 


620 


634 


631 


648 


633 


624 


641 


636 


21 


1600 


1630 


1610 


636 


613 


632 


624 


624 


637 


624 


636 


635 


22 


1640 


1610 


1620 


831 


601 


637 


626 


625 


641 


621 


631 


630 


23 


1600 


1590 


1610 


3660 


601 


669 


628 


627 


641 


626 


631 


630 


24 


1610 


1600 


1620 


11100 


610 


632 


627 


635 


639 


630 


631 


630 


25 


1600 


1630 


1610 


4700 


607 


635 


626 


625 


632 


625 


631 


629 


26 


1610 


1590 


1650 


769 


607 


636 


618 


622 


627 


612 


631 


642 


27 


1600 


1590 


3110 


5500 


617 


637 


601 


626 


628 


614 


619 


637 


28 


1830 


1600 


23700 


16200 


617 


641 


607 


627 


629 


612 


618 


658 


29 


1860 


1600 


34600 


16100 





644 


627 


623 


628 


615 


619 


622 


30 


1860 


1610 


34600 


16200 





645 


627 


622 


632 


635 


619 


626 


31 


1870 





62500 


14300 





645 


--- 


638 


--- 


640 


619 


- — 


TOTAL 


35799 


48720 


239580 


829173 


148384 


19668 


18676 


19415 


19148 


19441 


19846 


18851 


MEAN 


1155 


1624 


7728 


26750 


5299 


634 


623 


626 


638 


627 


640 


628 


MAX 


1870 


1750 


62500 


126000 


17600 


669 


637 


648 


652 


640 


666 


658 


MIN 


615 


1590 


1610 


602 


601 


618 


601 


602 


627 


612 


618 


602 


AC -FT 


71010 


96640 


475200 


1645000 


294300 


39010 


37040 


38510 


37980 


38560 


39360 


37390 


MEAN a 


2701 


4301 


21870 


40530 


12300 


8260 


6920 


4420 


2922 


2191 


2634 


2082 


AC-FTa 


166100 


255900 


1345000 


2492000 


683200 


507900 


411700 


271800 


173900 


134700 


161900 


123900 



a Adjusted for unreviewed evaporation, change in contents, and diversions in and out of Lake Oroville. Thermalito Diversion Pool. Thermalito 
Forebay, and Thermalito Afterbay. 



SACRAMENTO RIVER BASIN 
1 1407000 FEATHER RIVER AT OROVILLE, CA— Continued 

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1902 - 1967, BY WATER YEAR (WY) 

OCT NOV DEC JAN FEB MAR APR MAY JUN 



219 



SEP 



MEAN 


2085 


3069 


5296 


6790 


9463 


10080 


12120 


9930 


5176 


2505 


1980 


1792 


MAX 


12370 


19710 


28410 


39860 


28030 


39760 


30100 


25150 


15650 


5999 


3265 


2883 


(WY) 


1963 


1904 


1956 


1909 


1904 


1904 


1911 


1938 


1911 


1907 


1967 


1967 


HIN 


745 


853 


1102 


1350 


1714 


1564 


2146 


1246 


924 


852 


956 


992 


(WY) 


1933 


1933 


1950 


1947 


1933 


1924 


1924 


1924 


1924 


1924 


1924 


1924 



SUMMARY STATISTICS 

ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC-FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



WATER YEARS 1902 - 1967 



5834 








12860 






1907 


1623 






1924 


187000 


Mar 


19 


1907 


577 


Oct 


3 


1932 


652 


Sep 


30 


1932 


230000 


Mar 


19 


1907 


167.5 


Mar 


19 


1907 


,226000 








13300 








2870 








1470 









STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1969 - 1997, BY WATER YEAR (WY) 

OCT NOV DEC JAN FEB MAR APR MAY JUN 



JUL 



AUG 



MEAN 


549 


751 


1248 


3326 


2313 


2159 


1038 


780 


502 


498 


485 


485 


MAX 


1580 


3313 


7728 


26750 


25180 


18870 


7064 


7916 


998 


775 


640 


644 


(WY) 


1996 


1982 


1997 


1997 


1986 


1995 


1982 


1995 


1989 


1992 


1997 


1988 


MIN 


399 


397 


392 


401 


399 


404 


401 


387 


405 


404 


393 


389 


(WY) 


1969 


1979 


1979 


1976 


1978 


1978 


1977 


1969 


1974 


1981 


1979 


1972 



SUMMARY STATISTICS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1969 - 1997 



ANNUAL TOTAL 


741056 






1436701 














ANNUAL MEAN 


2025 






3936 






1175 








ANNUAL MEAN ADJUSTED a 


9448 






9293 






b 6165 








HIGHEST ANNUAL MEAN 














3936 






1997 


LOWEST ANNUAL MEAN 














404 






1976 


HIGHEST DAILY MEAN 


62500 


Dec 


31 


126000 


Jan 


2 


132000 


Feb 


18 


1986 


LOWEST DAILY MEAN 


608 


Jun 


2 


501 


Feb 


22 


222 


Sep 


19 


1972 


ANNUAL SEVEN-DAY MINIMUM 


611 


Mar 


5 


608 


Feb 


21 


337 


Sep 


13 


1972 


INSTANTANEOUS PEAK FLOW 








161000 


Jan 


2 


161000 


Jan 


2 


1997 


INSTANTANEOUS PEAK STAGE 








25.45 


Jan 


2 


25.45 


Jan 


2 


1997 


ANNUAL RUNOFF (AC-FT) 


1470000 






2850000 






851000 








ANNUAL RUNOFF (AC-FT) ADJUSTED a 6859000 






6728000 






b 4467000 








10 PERCENT EXCEEDS 


1840 






5710 






645 








50 PERCENT EXCEEDS 


634 






637 






421 








90 PERCENT EXCEEDS 


613 






618 






401 









a Adjusted for unreviewed evaporation, change in contents, and diversions in and out of Lake Oroville, Thermalito Diversion Pool, Thermalito 

Forebay, and Thermalito Afterbay. 
b Includes water year 1968. 



220 



SACRAMENTO RIVER BASIN 
1 1407150 FEATHER RIVER NEAR GRIDLEY, CA 



LOCATION.-Lat 39''22' 00", long 1 2 1° 38'46". in Boga Fernandez Grant, T. 1 8 N., R.3 E., Bune County, Hydrologic Unit 1 8020 1 06, on right bank 
300 ft upstream from highway bridge and 2.7 mi east of Gridley. 

DRAINAGE AREA.-3,676 mil 

PERIOD OF RECORD. --October 1964 to current year. January 1944 to September 1964 are published in reports by California Department of Water 
Resources. 
CHEMICAL DATA: Water years 1979-81. 
WATER TEMPERATURE: Water years 1965-93. 
SEDIMENT DATA: Water years 1965-93. 

REVISED RECORDS.-WDR CA-80-4: 1967(M), 1968(M). 

GAGE— Water-stage recorder Datum of gage is 2.91 ft below sea level. Prior to Mar. 13, 1966, water-stage recorder on left bank, at same datum. 
Mar. 14, 1966, to Sept. 30, 1973, gage at present location, with datum 47.09 ft above sea level. 

REMARKS. -Records good. Flow regulated by Lake Oroville since November 1967 (station 1 1406800) and Thermalito Afterbay release to Feather 
River since December 1967 (station 1 1406920). See schematic diagrams showing diversions and storage from Feather River at Lake Oroville 
and lower Sacramento River basin. 

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 151,000 ft'/s, Dec. 23. 1964, gage height, 100.43 ft, present datum; minimum 
daily, 1 17 ftVs, June 27, 1966. Since completion of Oroville Dam in 1967, maximum discharge, 163,000 ft-'/s, Jan. 2, 1997, gage height 
recorded, 98,83 ft, 100,42 ft, from outside gage; minimum daily, 366 ft^/s, July 26, 1968. 

EXTREMES OUTSIDE PERIOD OF RECORD.-Flood of Dec. 23, 1955, reached a stage of 102.25 ft, present datum, discharge unknown. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



NOV 



DEC 



JAN 



FEB 



MAR 



APR 



HAY 



JUN 



JUL 



1 


1820 


2030 


2390 


115000 


31100 


10800 


1780 


1230 


3160 


7520 


6780 


2460 


2 


1810 


2440 


2390 


150000 


31400 


10800 


1740 


1240 


3170 


7530 


6760 


2440 


3 


1810 


2460 


2390 


112000 


31000 


10400 


1600 


1250 


3060 


7560 


6730 


2280 


4 


1990 


2450 


2430 


99800 


31200 


8830 


1420 


1260 


2750 


7600 


6740 


2100 


5 


2200 


2400 


2950 


87700 


30800 


7210 


1240 


1280 


2760 


7590 


6750 


1930 


6 


2430 


2380 


5980 


77500 


28700 


5660 


1150 


1280 


2760 


7610 


6740 


1820 


7 


2480 


2410 


6150 


63600 


26600 


4140 


1100 


1290 


2620 


7640 


6570 


1790 


8 


2460 


2390 


6190 


50800 


24600 


3780 


1070 


1310 


2470 


7660 


5990 


1790 


9 


2440 


2410 


6300 


43100 


22600 


3710 


1070 


1320 


2490 


7640 


5420 


1780 


10 


2440 


2410 


9940 


39800 


20700 


3540 


1040 


1330 


2970 


7620 


4540 


1780 


11 


2430 


2400 


18700 


31100 


18900 


2990 


1050 


1330 


3340 


7570 


4250 


1770 


12 


2430 


2410 


25500 


23900 


17100 


2760 


1060 


1350 


3350 


7540 


3820 


1770 


13 


2430 


2430 


25700 


19900 


14900 


2530 


1070 


1370 


3340 


7510 


3760 


1760 


14 


2410 


2400 


25600 


19400 


12600 


2470 


1080 


1370 


3500 


7510 


3630 


1760 


15 


2410 


2420 


25700 


19000 


10600 


2430 


1090 


1380 


4020 


7500 


3250 


1770 


16 


2370 


2420 


23800 


16900 


8730 


2420 


1100 


1400 


4440 


7490 


3850 


1780 


17 


2400 


2430 


15600 


14400 


7580 


2390 


1110 


1410 


4440 


7470 


4560 


1740 


18 


2440 


2430 


15300 


12400 


7470 


2320 


1130 


1420 


4440 


7430 


4810 


1740 


19 


2390 


2450 


15100 


12200 


7420 


2260 


1150 


1470 


4410 


7430 


3980 


1700 


20 


2380 


2450 


14500 


12200 


7920 


2230 


1150 


2110 


4440 


7400 


3430 


1690 


21 


2390 


2450 


13400 


12100 


9200 


2210 


1170 


2540 


4440 


7390 


3210 


1720 


22 


2440 


2440 


12600 


12600 


9640 


2160 


1170 


2950 


4440 


7380 


3700 


1730 


23 


2400 


2390 


12100 


14300 


9590 


2150 


1170 


2990 


4450 


7350 


4530 


1730 


24 


2420 


2390 


11000 


23500 


9530 


2080 


1170 


3000 


4900 


7340 


4800 


1870 


25 


2400 


2410 


10000 


21800 


9480 


2050 


1180 


3010 


4950 


6940 


4610 


2540 


26 


2230 


2380 


9400 


16500 


9420 


2020 


1200 


3040 


5160 


6900 


3730 


2570 


27 


2010 


2390 


13000 


16900 


9940 


1980 


1200 


3040 


5790 


6860 


3010 


2690 


28 


1930 


2370 


35900 


29200 


10800 


1920 


1190 


3150 


6570 


6850 


2570 


3540 


29 


1980 


2380 


55400 


30300 





1880 


1210 


3140 


7390 


6820 


2500 


3830 


30 


1920 


2390 


60300 


30600 





1860 


1220 


3150 


7500 


6820 


2490 


4170 


31 


1920 





76400 


30900 


--- 


1820 


--- 


3150 


--- 


6800 


2470 


--- 


TOTAL 


70010 


72010 


562110 


1259400 


469520 


115800 


36080 


60560 


123520 


228270 


139980 


64040 


MEAN 


2258 


2400 


18130 


40630 


16770 


3735 


1203 


1954 


4117 


7364 


4515 


2135 


KMi 


2480 


2460 


76400 


150000 


31400 


10800 


1780 


3150 


7500 


7660 


6780 


4170 


MIN 


1810 


2030 


2390 


12100 


7420 


1820 


1040 


1230 


2470 


6800 


2470 


1690 


AC -FT 


138900 


142800 


1115000 


2498000 


931300 


229700 


71560 


120100 


245000 


452800 


277700 


127000 



SACRAMENTO RIVER BASIN 
11407150 FEATHER RIVER NEAR GRIDLEY, CA— Continued 

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1969 - 1997, BY WATER YEAR (WY) 

OCT NOV DEC JAN FEB MAR APR MAY ; 



221 



JUL 



MEAN 


2410 


3124 


5622 


8192 


7478 


7930 


5725 


4300 


3544 


4282 


3947 


3375 


MAX 


6520 


12940 


22700 


40630 


34170 


33530 


22630 


19010 


9996 


7364 


7565 


7872 


(WY) 


1975 


1974 


1984 


1997 


1986 


1983 


1982 


1995 


1983 


1997 


1974 


1974 


MIN 


853 


855 


832 


936 


905 


895 


804 


809 


913 


1708 


1059 


1002 


(WY) 


1978 


1978 


1978 


1992 


1991 


1992 


1991 


1977 


1990 


1970 


1991 


1990 



SUMMARY STATISTICS 

ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC -FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1969 - 1997 



2756860 






3201300 












7532 






8771 






4987 

11880 

1394 




1983 
1977 


76400 


Dec 


31 


150000 


Jan 


2 


150000 


Jan 2 


1997 


1150 


May 


15 


1040 


Apr 


10 


602 


May 21 


1977 


1570 


May 


10 


1060 


Apr 


8 


611 


May 18 


1977 








163000 


Jan 


2 


163000 


Jan 2 


1997 








100.42 


Jan 


2 


100.42 


Jan 2 


1997 


5468000 






6350000 






3613000 






13700 






21100 






10100 






5640 






3040 






2720 






2380 






1330 






1080 







222 



SACRAMENTO RIVER BASIN 



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SACRAMENTO RIVER BASIN 
11407800 JACKSON MEADOWS RESERVOIR NEAR SIERRA CITY, CA 



223 



LOCATION.--Ut 39°30'33", long 12a°33'08", in NW 1/4 SE 1/4 sec.18, T.19 N., R.13 E., Sierra County, Hydrologic Unit 18020125, Tahoe 
National Forest, on right bank at Jackson Meadows Dam on Middle Yuba River, 0.7 mi downstream from Pass Creek, and 5.7 mi southeast of 
Sierra City. 

DRAINAGE AREA.--37.6 mi^. 

PERIOD OF RECORD.-November 1964 to current year. 

GAGE. --Water-stage recorder. Datum of gage is sea level (levels by Nevada Irrigation District). 

REMARKS— Reservoir is formed by an earthfill dam. Storage began Nov. 9, 1964. Usable capacity, 66,700 acre-ft between elevations 5,933.0 ft, 
bottom of intake tower, and 6,036.0 ft, top of radial spillway gates. Dead contents, 2,500 acre-ft. Records, including extremes, represent total 
contents. See schematic diagram of Yuba River basin. 

COOPERATION. -Records were collected by Nevada Irrigation District, under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD.-Maximum contents, 71,100 acre-ft. May 31 and June 1, 1993, elevation, 6,037.78 ft; minimum since 
reservoir first filled, 2,500 acre-ft, Sept. 27-29, 1976, elevation, 5,933.1 ft. 

EXTREMES FOR CURRENT YEAR.-Maximum contents, 70,300 acre-ft, May 17, elevation, 6,037.07 ft; minimum, 38,300 acre-ft, Dec. 4, 
elevation, unknown. 

Capacity table (elevation, in feet, and contents, in acre-feet) 
(Based on table provided by Nevada Irrigation District, dated February 1965) 



5,930 


2,000 


5,940 


3,920 


5,950 


6,760 


5,960 


10,600 


5,970 


15,400 


5,980 


21,000 



5.990 


27,600 


6.000 


35,300 


6,010 


43,900 


6,020 


53,200 


6,030 


63,000 


6,040 


73,500 



RESERVOIR STORAGE (ACRE-FEET), WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 
DAILY OBSERVATION AT 2400 HOURS 



JUL 



AUG 



1 


51700 


43400 


838900 


62300 


54500 


54000 


54500 


64900 


69200 


65600 


60400 


54700 


2 


51400 


43200 


638500 


59400 


54500 


54000 


54400 


65000 


69100 


65500 


60200 


54500 


3 


51200 


42900 


638400 


56700 


54500 


54100 


54300 


65100 


69000 


65400 


60000 


54300 


4 


51000 


42600 


838300 


55700 


54400 


54100 


54300 


65400 


69200 


65200 


59800 


54200 


5 


50700 


42300 


39500 


55200 


54400 


54100 


54200 


65700 


669100 


65000 


59700 


54000 


6 


50400 


42100 


39600 


55000 


54400 


54000 


54200 


66200 


669000 


64900 


59400 


53800 


7 


50100 


41800 


39600 


54800 


54400 


54000 


54100 


66700 


868900 


64700 


59200 


53600 


8 


49900 


41600 


39500 


54700 


54400 


54000 


54100 


66200 


668900 


64600 


59000 


53500 


9 


49600 


41300 


39700 


54700 


54400 


54000 


54100 


66300 


668800 


64400 


58800 


53300 


10 


49300 


41100 


40300 


54600 


54400 


53900 


54100 


66800 


68600 


64200 


58600 


53100 


11 


49000 


40800 


41100 


54500 


54400 


53900 


54000 


70200 


68500 


64000 


58400 


52900 


12 


48800 


40500 


43100 


54500 


54400 


53800 


54000 


70200 


68300 


63900 


58300 


52700 


13 


48500 


40300 


44000 


54500 


54000 


53700 


53900 


70200 


68100 


63700 


58100 


52600 


14 


48200 


40000 


44400 


54400 


54000 


53700 


54000 


70200 


67900 


63500 


57900 


52400 


15 


47900 


39800 


44700 


54400 


54000 


53600 


54200 


70200 


67800 


63400 


57700 


52200 


16 


47600 


39500 


44900 


54400 


54000 


53600 


54400 


70300 


67600 


63200 


57500 


52100 


17 


47300 


39700 


45000 


54400 


54100 


53600 


54800 


70300 


67400 


63000 


57300 


51900 


18 


47100 


640100 


45100 


54400 


54000 


53600 


55200 


70200 


67300 


62800 


57200 


51700 


19 


46800 


840100 


45100 


54400 


54100 


53600 


56600 


70000 


67200 


62600 


56900 


51500 


20 


46500 


640100 


45300 


55000 


54000 


53600 


57600 


69800 


67100 


62500 


56800 


51300 


21 


46300 


840100 


45500 


55000 


54100 


53700 


58800 


69800 


67000 


62300 


56600 


51200 


22 


46000 


640000 


45700 


54900 


54100 


53800 


59700 


69800 


66900 


62100 


56500 


51000 


23 


45700 


840000 


45800 


54800 


54000 


53900 


61100 


69700 


66800 


61900 


56300 


50800 


24 


45500 


639900 


45800 


54800 


54000 


54100 


61800 


69700 


66600 


61700 


56100 


50600 


25 


45300 


839800 


45800 


54800 


54000 


54400 


62300 


69700 


66500 


61600 


55900 


50200 


26 


45000 


639700 


46200 


54700 


54000 


54600 


62900 


69600 


66400 


61400 


55700 


49900 


27 


44700 


839300 


46700 


54600 


54000 


54700 


63500 


69500 


66200 


61200 


55600 


49600 


28 


44400 


639200 


46900 


54600 


54000 


54800 


64200 


69400 


66100 


61100 


55400 


49200 


29 


44200 


839200 


47600 


54600 





54700 


64600 


69300 


65900 


60900 


55200 


48900 


30 


43900 


639100 


50100 


54600 





54600 


64900 


69300 


65800 


60700 


55000 


48600 


31 


43600 


--- 


54900 


54500 


— 


54600 





69300 





60500 


54800 





MAX 


51700 


43400 


54900 


62300 


54500 


54800 


64900 


70300 


69200 


65600 


60400 


54700 


MIN 


43600 


39100 


38300 


54400 


54000 


53600 


53900 


64900 


65800 


60500 


54800 


48600 


a 


6009.66 




6021.84 6021.43 


6020.90 


6021.50 


6031.82 


6036.08 


6032.71 


6027.57 


6021.75 


6015.12 


b 


-8500 


-4500 


*15800 


-400 


-500 


+ 600 


+10300 


+ 4400 


-3500 


-5300 


-5700 


-6200 


CAL 
WTR 


YR 1996 
YR 1997 


MAX 70900 
MAX 70300 


MIN 34500 
MIN 38300 


b +20500 
b -3500 

















e Estimated. 

a Elevation, in feet, at end of month. 

b Change in contents, in acre-feet. 



224 SACRAMENTO RIVER BASIN 

11407815 MIDDLE YUBA RIVER, CONTROLLED RELEASE AT JACKSON MEADOWS DAM. NEAR SIERRA CITY, CA 

LOCATION.-Lal 39°30'36", long nCSS'lS", in NW 1/4 SE 1/4 sec.l8, T.19 N., R.13 E., Sierra County, Hydrologic Unit 18020125, Tahoe 
National Forest, in outlet structure near right bank below Jackson Meadows Dam on Middle Yuba River, 0.7 mi downstream from Pass Creek, 
and 5.7 mi southeast of Sierra City. 

DRAINAGE AREA.--37.6 mi^. 

PERIOD OF RECORD.--JuIy 1994 to cuirent year. 

GAGE --Ultrasonic meter measures flow in two outlet pipes. Elevation of gage is 5,910 ft above sea level, from topographic map. 

REMARKS. -Flow regulated by Jackson Meadows Reservoir (station 1 1407800). Flow over the spillway bypasses this station. See schematic 
diagram of Yuba River basin. 

COOPERATION— Records were collected by Nevada Irrigation District, under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD.-Maximum daily discharge, 415 ft^/s, May 23, 28, 1996; minimum daily. 7.9 ft'/s, several days 
November 1994. 

DISCHARGE, CUBIC FEET PER SECOND. WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



OCT 



NOV 



DEC 



JAN 



FEB 



MAR 



APR 



MAY 



JUN 



JUL 



AUG 



SEP 



1 


143 


136 


133 


59 


57 


56 


170 


261 


6208 


694 


690 


91 


2 


142 


136 


133 


59 


57 


56 


170 


261 


6211 


693 


689 


91 


3 


143 


136 


132 


58 


57 


56 


170 


261 


6214 


693 


689 


91 


4 


143 


135 


132 


58 


57 


56 


169 


261 


6221 


693 


690 


90 


5 


143 


135 


133 


57 


57 


56 


169 


262 


6215 


693 


689 


91 


6 


142 


135 


133 


57 


57 


56 


170 


262 


6212 


693 


690 


90 


7 


142 


135 


133 


57 


57 


56 


169 


234 


e211 


692 


690 


90 


8 


142 


135 


133 


57 


57 


56 


169 


218 


6210 


692 


690 


90 


9 


142 


134 


96 


57 


57 


56 


169 


219 


e204 


692 


690 


90 


10 


141 


134 


51 


57 


57 


56 


169 


219 


6183 


692 


690 


90 


11 


141 


134 


52 


57 


57 


92 


169 


220 


6182 


692 


690 


90 


12 


141 


134 


52 


57 


57 


136 


169 


220 


el81 


692 


690 


90 


13 


141 


134 


53 


57 


57 


135 


169 


221 


6182 


692 


690 


90 


14 


140 


133 


53 


57 


57 


136 


169 


221 


el82 


691 


690 


90 


15 


140 


133 


53 


57 


57 


136 


169 


221 


6181 


691 


689 


90 


16 


140 


133 


53 


57 


57 


136 


169 


221 


6181 


691 


689 


90 


17 


139 


133 


53 


57 


56 


136 


169 


221 


6162 


691 


689 


90 


18 


133 


134 


54 


57 


56 


136 


169 


221 


e96 


691 


889 


90 


19 


174 


134 


54 


57 


56 


142 


170 


221 


695 


691 


691 


90 


20 


174 


134 


54 


57 


56 


165 


171 


221 


694 


691 


691 


90 


21 


174 


134 


54 


57 


56 


168 


172 


221 


694 


691 


690 


90 


22 


154 


134 


54 


57 


56 


170 


173 


220 


694 


691 


689 


90 


23 


138 


134 


54 


57 


56 


170 


187 


e221 


694 


691 


88 


90 


24 


138 


134 


54 


57 


56 


170 


207 


e221 


694 


694 


87 


141 


25 


138 


133 


54 


57 


56 


170 


207 


e221 


694 


691 


87 


ISO 


26 


138 


133 


54 


57 


56 


170 


208 


e225 


693 


690 


87 


179 


27 


137 


133 


54 


57 


56 


170 


209 


e216 


693 


690 


91 


179 


28 


137 


133 


54 


57 


56 


170 


209 


e206 


693 


691 


691 


179 


29 


137 


133 


54 


57 





170 


240 


6203 


693 


690 


691 


179 


30 


137 


133 


55 


57 





170 


260 


e204 


693 


690 


91 


178 


31 


137 





56 


57 





170 





e206 





690 


91 





TOTAL 


4451 


4021 


2337 


1773 


1584 


3778 


5459 


7030 


4560 


2839 


2778 


3289 


MEAN 


144 


134 


75.4 


57.2 


56.6 


122 


182 


227 


152 


91.6 


89.6 


110 


MAX 


174 


136 


133 


59 


57 


170 


260 


262 


221 


94 


91 


180 


MIN 


133 


133 


51 


57 


56 


56 


169 


203 


93 


90 


87 


90 


AC -FT 


8830 


7980 


4640 


3520 


3140 


7490 


10830 


13940 


9040 


5630 


5510 


6520 


CAL YR 


1996 


TOTAL 44420 


MEAN 121 


MAX 415 


MIN 10 


AC -FT 


88110 












WTR YR 


1997 


TOTAL 43899 


MEAN 120 


MAX 262 


MIN 51 


AC -FT 


87070 












e Estimated. 

























SACRAMENTO RIVER BASIN 
1 1408000 ME,TON-BOWMAN TUNNEL OUTLET NEAR GRANITEVILLE, CA 



225 



LOCATION.-Lat 39°27'37", long 120°36'37', in NW 1/4 NE 1/4 sec.3. T.18 N.. R.12 E., Nevada County, Hydrologic Unit 18020125, on right 
bank 100 ft downstream from tunnel outlet near upper end of Bowman Lake, and 6.9 ini east of Graniteville. 

PERIOD OF RECORD.--May 1 928 to September 1 930, February 1 93 1 to current year. Monthly discharge only for some periods, published in WSP 
1315-A. Prior to October 1962, published as "Milton-Bowman tunnel at outlet." 

GAGE.--Waler-stage recorder and Parshall Hume. Datum of gage is 5,592.51 ft above sea level. Prior to Sept. 22, 1964, at datum 0.56 ft higher. 

REMARKS. "Tunnel diverts from Middle Yuba River at Milton Reservoir, in sec.l2, T.19 N., R.12 E., and discharges into Bowman Lake. Nearly 

the entire flow of Middle Yuba River is diverted during low and medium flows. Middle Yuba River is regulated by Jackson Meadows Reservoir 

(station 1 1407800) since November 1964. See schematic diagram of Yuba River basin. 

COOPERATION. --Records were collected by Nevada Irrigation District, under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD.-Maximum daily discharge, 492 ft^/s, Feb. 11, 1941; minimum daily, 0.4 ft'/s, Oct. 7, 1944. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



1 


135 


130 


140 


369 


25 


21 


e220 


e257 


207 


90 


86 


84 


2 


135 


130 


134 


384 


25 


20 


el95 


e257 


206 


89 


85 


85 


3 


134 


129 


132 


248 


25 


20 


el79 


e257 


209 


89 


85 


85 


4 


134 


129 


135 


40 


25 


20 


el70 


e257 


217 


89 


86 


84 


5 


134 


129 


258 


38 


24 


20 


el65 


e258 


211 


89 


85 


84 


6 


134 


129 


166 


36 


24 


20 


6163 


e258 


208 


89 


86 


84 


7 


134 


129 


150 


35 


24 


20 


el64 


e230 


207 


88 


86 


84 


8 


133 


128 


150 


34 


24 


20 


el65 


e214 


206 


88 


86 


87 


9 


133 


128 


153 


33 


24 


20 


el65 


e214 


200 


88 


86 


94 


10 


133 


128 


141 


32 


23 


20 


Gl65 


e214 


179 


88 


86 


93 


11 


133 


128 


158 


31 


23 


108 


el65 


e213 


178 


88 


86 


92 


12 


133 


127 


255 


31 


23 


126 


el65 


e212 


177 


88 


86 


92 


13 


133 


127 


153 


30 


22 


124 


el65 


e304 


178 


88 


86 


92 


14 


132 


127 


112 


30 


21 


126 


el65 


€326 


178 


87 


86 


92 


15 


132 


127 


96 


30 


21 


129 


el65 


e348 


177 


87 


85 


94 


16 


132 


127 


88 


29 


21 


136 


el65 


e361 


177 


87 


85 


93 


17 


132 


150 


83 


28 


21 


139 


el65 


e362 


158 


87 


85 


91 


18 


133 


178 


79 


28 


21 


140 


el65 


e363 


92 


87 


85 


90 


19 


132 


151 


77 


28 


21 


145 


el66 


e352 


91 


87 


87 


90 


20 


132 


146 


76 


28 


21 


166 


el67 


6332 


90 


87 


87 


89 


21 


131 


137 


78 


27 


21 


165 


el68 


6313 


90 


87 


86 


88 


22 


131 


151 


75 


27 


21 


164 


el69 


6352 


90 


87 


85 


87 


23 


131 


144 


73 


27 


21 


162 


el83 


e346 


90 


87 


85 


86 


24 


134 


137 


71 


27 


21 


161 


e203 


6310 


90 


90 


85 


116 


25 


134 


135 


70 


28 


21 


168 


e203 


6276 


90 


87 


85 


168 


26 


131 


134 


84 


28 


21 


201 


e204 


e257 


89 


86 


85 


167 


27 


130 


132 


116 


27 


21 


237 


e205 


6240 


89 


86 


85 


166 


28 


131 


132 


92 


26 


21 


e274 


e205 


225 


89 


87 


85 


164 


29 


132 


131 


120 


26 





e269 


e236 


217 


89 


86 


85 


163 


30 


131 


131 


216 


25 





e252 


e256 


213 


89 


86 


85 


162 


31 


130 





332 


25 





e243 





210 





86 


84 





TOTAL 


4109 


4041 


4063 


1835 


626 


3836 


5436 


8548 


4441 


2715 


2650 


3146 


MEAN 


133 


135 


131 


59.2 


22.4 


124 


181 


276 


148 


87.6 


85.5 


105 


MAX 


135 


178 


332 


384 


25 


274 


256 


363 


217 


90 


87 


168 


MIN 


130 


127 


70 


25 


21 


20 


163 


210 


89 


86 


84 


84 


AC -FT 


8150 


8020 


8060 


3640 


1240 


7610 


10780 


16950 


8810 


5390 


5260 


6240 


e Est 


i mated. 

























226 



SACRAMENTO RIVER BASIN 
1 1408000 MILTON-BOWMAN TUNNEL OUTLET NEAR GRANITEVILLE. CA— Continued 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1928 - 1964, BY WATER YEAR (WY) 

OCT NOV DEC JAN FEB MAR APR MAY JUN 



MEAN 


8.00 


14.6 


31.4 


35.3 


51.6 


72.9 


176 


242 


142 


28.6 


6.77 


3.88 


MAX 


101 


65.4 


118 


124 


143 


213 


294 


414 


272 


90.9 


26.8 


10.1 


(WY) 


1963 


1951 


1956 


1942 


1963 


1940 


1936 


1937 


1933 


1938 


1952 


1952 


MIN 


.50 


.50 


.70 


1.00 


4.28 


9.19 


19.7 


45.6 


24.8 


4.21 


2.06 


1.00 


(WY) 


1931 


1931 


1931 


1931 


1931 


1933 


1938 


1936 


1934 


1939 


1964 


1931 



SUMMARY STATISTICS 

ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
ANNUAL RUNOFF (AC -FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



WATER YEARS 1928 



1964 



67.9 








97.2 






1930 


33.5 






1949 


492 


Feb 


11 


1941 


.40 


Oct 


7 


1944 


.50 


Oct 


1 


1930 


49180 








220 








20 








3.0 









STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1966 - 1997, BY WATER YEAR (WY) 



MEAN 


150 


129 


62.0 


38.8 


37.7 


49.7 


47.2 


86.3 


73.6 


64.1 


88.3 


155 


MAX 


310 


368 


357 


211 


197 


265 


181 


333 


224 


174 


253 


300 


(WY) 


1981 


1973 


1973 


1985 


1985 


1986 


1997 


1969 


1993 


1976 


1968 


1974 


MIN 


1.52 


1.34 


1.25 


1.17 


1.20 


1.68 


5.38 


7.69 


5.23 


3.95 


2.20 


1.72 


(WY) 


1977 


1977 


1977 


1977 


1977 


1977 


1977 


1986 


1976 


1977 


1993 


1981 



SUMMARY STATISTICS 

ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
ANNUAL RUNOFF (AC -FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1966 - 1997 



35967 




45446 










98.3 




125 






81.9 

133 
14.5 


1973 
1977 


344 


Apr 9 


384 


Jan 


2 


438 


Nov 4 1972 


11 


Jul 25 


20 


Mar 


2 


1.1 


Dec 11 1976 


11 


Jul 25 


20 


Mar 


2 


1.1 


Dec 26 1976 


71340 




90140 






59310 




175 




222 






258 




128 




124 






25 




15 




25 






5.1 





SACRAMENTO RIVER BASIN 
1 1408550 MIDDLE YUBA RIVER BELOW MILTON DAM, NEAR SIERRA CITY, CA 



227 



LOCATION.-Lat 39°3r 19", long 120°34'57", in SW 1/4 SW 1/4 sec.l2, T.19 N., R.12 E., Sierra County. Hydrologic Unit 18020125, Tahoe 
National Forest, on right bank 350 ft downstream from Milton Dam, and 4.1 mi southeast of Sierra City. 

DRAINAGE AREA.--39.9 mi^. 

PERIOD OF RECORD.-October 1987 to current year. Unpublished records for water years 1965-87 available in files of the U.S. Geological 
Survey. 

REVISED RECORDS.-WDR CA-88-4: Drainage area. 

GAGE. -Water-stage recorder, sharp-crested weir, and crest-stage gage. Elevation of gage is 5,690 ft above sea level, from topographic map. Prior 
to October 1987, nonrecording gage 450 ft downstream at different datum. 

REMARKS. -Middle Yuba River is regulated by Jackson Meadows Reservoir (station 1 1407800) since November 1964 and Milton Reservoir. 
Tunnel diverts from Middle Yuba River at Milton Dam, in sec. 12, T.19 N., R.12 E., and discharges into Bowman Lake via Milton-Bowman 
Tunnel (station 1 1408000). Practically the entire flow of Middle Yuba River is diverted during low and medium flows. See schematic diagram 
of Yuba River basin. 

COOPERATION. -Records were collected by Nevada Irrigation District, under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 8,610 ft'/s, Jan. 2, 1997, gage height, 17.1 ft, from flood marks; minimum daily. 
0.77 ft^/s. Nov. 3, 1990. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



DAY 



NOV 



DEC 



JAN 



FEB 



MAR 



APR 



MAY 



JUN 



JUL 



AUG 



1 


3.9 


4.0 


4.0 


e3770 


el24 


e84 


73 


4.3 


4.6 


4.1 


3.9 


3.8 


2 


3.9 


4.2 


3.9 


e6860 


ell8 


e87 


63 


4.2 


4.6 


4.0 


3.9 


3.8 


3 


3.9 


4.2 


3.9 


62290 


6109 


685 


47 


4.2 


4.5 


4.0 


3.9 


3.8 


4 


3.9 


4.2 


3.9 


el070 


6106 


678 


40 


4.2 


4.3 


4.0 


4.0 


3.8 


5 


3.9 


4.3 


3.9 


e635 


697 


e71 


27 


4.2 


4.2 


4.0 


4.0 


3.8 


6 


4.0 


4.2 


3.9 


e431 


e94 


664 


8.1 


4.2 


4.2 


3.9 


4.0 


3.8 


7 


4.0 


4.2 


e4.0 


e334 


688 


e57 


5.2 


4.2 


4.2 


3.9 


4.0 


3.8 


8 


4.0 


4.2 


e4.0 


e277 


690 


650 


5.0 


4.4 


e4.2 


3.9 


4.0 


3.8 


9 


4.0 


4.1 


g4.0 


8237 


684 


644 


4.8 


4.5 


64.2 


4.0 


3.9 


3.9 


10 


4.0 


3.9 


g4.0 


6202 


679 


63 6 


4.7 


4.7 


64.1 


4.0 


3.9 


3.8 


11 


4.0 


3.9 


e4.0 


el84 


679 


630 


4.7 


11 


64.1 


3.9 


3.9 


3.8 


12 


4.0 


4.0 


e4 .0 


el66 


677 


623 


4.7 


12 


e4.1 


3.9 


3.9 


3.8 


13 


4.0 


4.0 


e4.0 


6154 


67 5 


6l5 


4.7 


12 


64.1 


3.9 


3.9 


3.8 


14 


4.0 


4.0 


e4.0 


el31 


e74 


4.5 


4.7 


22 


e4.1 


3.9 


3.9 


3.8 


15 


4.0 


4.0 


e4.0 


el30 


674 


4.5 


4.7 


18 


64.1 


3.9 


3.9 


3.8 


16 


4.0 


4.0 


e4.0 


6118 


677 


4.6 


4.6 


7.2 


64.0 


3.9 


3.9 


3.8 


17 


4.0 


4.0 


e4.0 


6108 


688 


4.6 


4.7 


5.1 


64.0 


3.9 


3.9 


3.7 


18 


4.0 


4.0 


e4.0 


el02 


e90 


4.6 


4.7 


5.0 


64.0 


3.9 


3.8 


3.7 


19 


4.0 


4.0 


e4.0 


e93 


692 


4.5 


4.7 


4.9 


4.0 


3.9 


3.8 


3.7 


20 


4.0 


4.0 


e4.0 


e95 


e95 


4.5 


4.7 


4.9 


4.0 


3.9 


3.8 


3.7 


21 


4.0 


4.0 


e4.0 


6108 


693 


4.6 


4.7 


4.9 


4.0 


3.9 


3.8 


3.8 


22 


4.0 


4.0 


e4.0 


6144 


694 


4.6 


4.7 


4.9 


4.0 


3.9 


3.8 


3.8 


23 


4.0 


4.0 


e4.0 


6172 


691 


4.6 


4.9 


4.9 


4.0 


3.9 


3.8 


3.9 


24 


4.0 


4.0 


e4.0 


6129 


691 


4.6 


4.9 


4.8 


4.0 


3.9 


3.8 


3.8 


25 


4.0 


4.0 


e4.0 


el84 


689 


4.6 


4.8 


4.7 


4.1 


3.9 


3.8 


3.8 


26 


4.0 


4.0 


g4.0 


6254 


e90 


4.6 


4.8 


4.7 


4.1 


3.9 


3.8 


3.8 


27 


3.9 


4.0 


e4.0 


6222 


690 


4.6 


4.8 


4.7 


4.1 


3.9 


3.8 


3.8 


28 


3.9 


4.0 


e4.0 


el84 


685 


4.6 


4.8 


4.7 


4.1 


3.9 


3.8 


3.8 


29 


3.9 


4.0 


e4.0 


el60 





4.7 


4.8 


4.6 


4.1 


3.9 


3.8 


3.8 


30 


3.9 


4.0 


e4.0 


6141 





5.0 


4.9 


4.6 


4.1 


3.9 


3.8 


3.8 


31 


3.9 


--- 


e4.0 


el26 





50 





4.6 





3.9 


3.8 





TOTAL 


123.0 


121.4 


123.5 


19211 


2533 


852.3 


372.8 


197.3 


124.2 


121.7 


120.0 


113.8 


MEAN 


3.97 


4.05 


3.98 


620 


90.5 


27.5 


12.4 


6.36 


4.14 


3.93 


3.87 


3.79 


MAX 


4.0 


4.3 


4.0 


6860 


124 


87 


73 


22 


4.6 


4.1 


4.0 


3.9 


MIN 


3.9 


3.9 


3.9 


93 


74 


4.5 


4.6 


4.2 


4.0 


3.9 


3.8 


3.7 


AC -FT 


244 


241 


245 


38110 


5020 


1690 


739 


391 


246 


241 


238 


226 


e Estimated. 

























228 



SACRAMENTO RIVER BASIN 



1 1408550 MIDDLE YUBA RIVER BELOW MILTON DAM. NEAR SIERRA CITY. CA— Continued 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1988 - 1997, BY WATER YEAR (WY) 
OCT NOV DEC JAN FEB MAR APR MAY 



JUL 



AUG 



MEAN 


4.17 


3.79 


3.59 


65.2 


31.2 


11.9 


43.9 


139 


114 


20.4 


3.99 


3.96 


MAX 


7.02 


4.94 


3.98 


620 


195 


61.3 


213 


723 


631 


119 


5.36 


4.68 


(WY) 


1994 


1994 


1997 


1997 


1993 


1995 


1996 


1995 


1995 


1995 


1993 


1993 


MIN 


3.55 


3.21 


3.26 


3.24 


3.19 


3.45 


3.09 


3.58 


3.38 


3.37 


3.39 


3.42 


(WY) 


1989 


1996 


1989 


1996 


1989 


1990 


1994 


1990 


1990 


1988 


1995 


1990 



SUMMARY STATISTICS 

ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC -FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1988 - 1997 



29843.0 






24014.0 










81.5 






65.8 




37.1 
146 
3.53 




1995 
1990 


2020 


May 


18 


6860 


Jan 2 


6860 


Jan 


2 1997 


3.1 


Jun 


19 


3.7 


Sep 17 


.77 


Nov 


3 1990 


3.1 


Jun 


19 


3.7 


Sep 14 


1.8 


Apr 


9 1994 








8610 


Jan 2 


8610 


Jan 


2 1997 








17.10 


Jan 2 


17.10 


Jan 


2 1997 


59190 






47630 




26900 






380 






94 




30 






4.0 






4.0 




3.8 






3.2 






3.8 




3.3 







SACRAMENTO RIVER BASIN 
1 1408870 LOHMAN RIDGE TUNNEL AT INTAKE, NEAR CAMPTONVILLE, CA 



229 



LOCATION.--Lat 39°24'25", long 120°59'43", in SW 1/4 NE 1/4 sec.20, T.18 N., R.8 E., Sierra County, Hydrologic Unit 18020125, Tahoe 
National Forest, at tunnel intake at Our House Dam and 4.0 mi southeast of Camptonville. 

PERIOD OF RECORD.-October 1988 to current year. Records of monthly diversion published with Middle Yuba River below Our House Dam, 
near Camptonville (station 1 1408880), for water years 1969-88. 

GAGE. --Water-stage recorder. Datum of gage is 2,014.77 ft above sea level. 

REMARKS— Records good except for period of estimated daily discharge, which are fair. Tunnel diverts water from Middle Yuba River to New 
BuUards Bar Reservoir (station 1 1413515) for power development. See schematic diagram of Yuba River basin. 

EXTREMES FOR PERIOD OF RECORD.-Maximum daily discharge, 839 ft'/s. Mar. 25, 1989; no flow for many days in most years. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



DAY 



NOV 



DEC 



JAN 



FEB 



MAR 



APR 



MAY 



JUN 



Jttt 



AUG 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1989 - 1997, BY WATER YEAR (WY) 



SEP 



1 


9.2 


17 


216 


11 




.29 


166 


165 


191 


64 


2.5 


.40 


.22 


2 


9.2 


15 


191 


.71 




.28 


200 


140 


168 


60 


9.6 


.37 


.22 


3 


8.7 


14 


133 


.59 




.28 


177 


139 


149 


61 


20 


.37 


.23 


4 


8.0 


13 


134 


.55 




.29 


115 


139 


152 


99 


25 


.39 


.23 


5 


7.8 


14 


762 


.55 




.28 


145 


111 


155 


104 


20 


.38 


.22 


6 


7.0 


13 


708 


.52 




.28 


149 


127 


156 


85 


17 


.35 


.22 


7 


6.6 


12 


512 


.50 




.28 


147 


121 


152 


69 


17 


.33 


.21 


8 


6.2 


12 


417 


.32 




.29 


147 


116 


150 


61 


15 


.30 


.19 


9 


6.2 


12 


533 


.14 




.27 


145 


114 


155 


57 


14 


.30 


.19 


10 


6.4 


12 


805 


.18 




.28 


150 


110 


152 


60 


14 


.30 


.19 


11 


5.9 


11 


786 


.10 




.28 


165 


111 


150 


53 


14 


.29 


.20 


12 


6.2 


11 


523 


.04 




.28 


120 


114 


149 


49 


14 


.45 


.22 


13 


6.4 


10 


582 


.13 




.30 


100 


104 


151 


53 


14 


.57 


.22 


14 


6.6 


10 


664 


.29 




.29 


96 


108 


149 


48 


13 


.57 


.17 


15 


6.6 


12 


639 


.28 




.29 


106 


122 


152 


44 


11 


.55 


.17 


16 


5.9 


13 


568 


.27 




.29 


159 


134 


142 


46 


9.0 


.52 


.18 


17 


6.1 


161 


496 


.27 




.29 


207 


134 


147 


50 


8.5 


.39 


.15 


18 


11 


555 


421 


.27 


102 




195 


151 


137 


43 


7.5 


.35 


.12 


19 


14 


301 


360 


.28 


212 




198 


379 


137 


39 


7.4 


.38 


.11 


20 


11 


411 


324 


.27 


e280 




216 


378 


126 


38 


7.1 


.52 


.08 


21 


9.3 


176 


460 


.25 


e256 




234 


398 


114 


36 


6.9 


.51 


.05 


22 


9.2 


358 


445 


.27 


e243 




253 


397 


105 


36 


6.6 


.47 


.04 


23 


8.7 


385 


431 


.28 


e230 




276 


451 


100 


32 


6.7 


.49 


.03 


24 


15 


201 


356 


.27 


e201 




285 


301 


105 


33 


7.0 


.47 


.02 


25 


50 


157 


312 


.30 


164 




294 


257 


106 


35 


6.8 


.47 


.02 


26 


25 


119 


517 


.34 


185 




299 


222 


101 


32 


5.3 


.43 


.01 


27 


15 


99 


741 


.30 


193 




323 


226 


92 


32 


5.0 


.41 


.00 


28 


13 


90 


752 


.28 


128 




372 


231 


85 


32 


4.8 


.37 


.00 


29 


22 


80 


730 


.28 







343 


219 


80 


30 


4.9 


.35 


.00 


30 


36 


70 


515 


.28 






310 


201 


77 


18 


4.6 


.30 


.00 


31 


22 


- — 


41 


.28 




--- 


282 





72 





2.1 


.25 





TOTAL 


380.2 


3364 


15074 


20.39 


2198 


.84 


6374 


5920 


4057 


1499 


320.3 


12.60 


3.91 


MEAN 


12.3 


112 


486 


.66 


78.5 


206 


197 


131 


50.0 


10.3 


.41 


.13 


MAX 


50 


555 


805 


11 




280 


372 


451 


191 


104 


25 


.57 


.23 


MIN 


5.9 


10 


41 


.04 




.27 


96 


104 


72 


18 


2.1 


.25 


.00 


AC -FT 


754 


6670 


29900 


40 


4360 


12640 


11740 


8050 


2970 


635 


25 


7.8 



MEAN 


11.7 


34.0 


125 


181 


253 


366 


427 


270 


180 


57.1 


9.08 


4.44 


MAX 


51.4 


112 


486 


509 


502 


644 


688 


701 


503 


269 


35.8 


14.8 


(WY) 


1990 


1997 


1997 


1995 


1996 


1993 


1995 


1996 


1993 


1995 


1995 


1995 


MIN 


.000 


1.42 


1.36 


.66 


16.6 


206 


182 


38.0 


10.6 


.86 


.000 


.000 


(WY) 


1989 


1991 


1991 


1997 


1991 


1997 


1994 


1995 


1992 


1994 


1992 


1992 



StJMMARY STATISTICS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1989 - 1997 



ANNUAL TOTAL 


114558.2 






39224. 


.24 














ANNUAL MEAN 


313 






107 








159 








HIGHEST ANNUAL MEAN 
















280 






1993 


LOWEST ANNUAL MEAN 
















73.1 






1994 


HIGHEST DAILY MEAN 


814 


May 


16 


805 




Dec 


10 


839 


Mar 


25 


1989 


LOWEST DAILY MEAN 


5.9 


Oct 


11 




.00 


Sep 


27 


.00 


Oct 


1 


1988 


ANNUAL SEVEN-DAY MINIMUM 


6.2 


Oct 


11 




.01 


Sep 


24 


.00 


Oct 


1 


1988 


ANNUAL RUNOFF (AC -FT) 


227200 






77800 








115300 








10 PERCENT EXCEEDS 


742 






323 








526 








50 PERCENT EXCEEDS 


180 






22 








41 








90 PERCENT EXCEEDS 


11 








.25 






.00 









e Estimated. 



230 



SACRAMENTO RIVER BASIN 
1 1408880 MIDDLE YUBA RIVER BELOW OUR HOUSE DAM, NEAR CAMPTONVILLE, CA 



LOCATION.--Ut 39°24'42". long 120°59'49", in SW 1/4 NW 1/4 sec.20, T.18 N., R.9 E.. Sierra County, Hydrologic Unit 18020125, Tahoe 
National Forest, on right bank 300 ft downstream from Our House Dam, and 4.0 mi southeast of Camptonville. 

DRAINAGE AREA.-- 145 mi^. 

PERIOD OF RECORD.-October 1968 to current year. 

GAGE. -Water-stage recorder, sharp-crested weir since Oct. 16, 1990, and crest-stage gage. Datum of gage is 1,957.51 fl above sea level. Prior to 
Nov. 4, 1 970. water-stage recorder at datum 1 ft higher. Prior to Oct. 1 . 1 987, at site 75 ft downstream. 

REMARKS. "Records good except for periods of spill which are considered fair. Natural flow of stream affected by Jackson Meadows Reservoir 
(station 1 1407800), Milton Bowman Tunnel (station 1 1408000), which diverts upstream from station to Bowman Lake (station 1 1415500), 
and Lohman Ridge Tunnel (station 1 1 408870), which diverts 300 ft upstream to Oregon Creek and then to New BuUards Bar Reservoir (station 
1 1 4 1 35 1 5) via Camptonville Tunnel (station 1 1 409350). Other small diversions upstream from station. See schematic diagram of Yuba River 
basin. 

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 27,500 ft^/s, Jan. 2, 1997. gage height, 30.7 ft, from floodmark, present datum, 
from rating curve extended above 8,600 ft^/s on basis of theoretical rating of Our House Dam spillway; minimum daily, 2.1 ft^/s, Jan. 10, 1982. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



DAY 



NOV 



DEC 



JAN 



FEB 



MAR 



APR 



MAY 



JUH 



JUL 



1 


33 




33 


36 


19800 


1260 


61 


38 


62 


60 


66 


41 


34 


2 


33 




33 


35 


21000 


1130 


63 


36 


71 


59 


57 


40 


33 


3 


33 




33 


34 


8200 


995 


61 


38 


79 


58 


42 


38 


35 


4 


33 




33 


34 


4460 


935 


61 


38 


84 


87 


36 


39 


34 


5 


33 




33 


1600 


3100 


861 


61 


48 


89 


70 


37 


39 


33 


6 


34 




33 


337 


2200 


780 


61 


49 


87 


62 


40 


39 


33 


7 


33 




33 


45 


1900 


739 


61 


48 


86 


60 


39 


38 


32 


8 


33 




33 


43 


1500 


753 


61 


48 


85 


58 


39 


37 


32 


9 


33 




33 


79 


1250 


692 


61 


48 


96 


56 


40 


37 


32 


10 


33 




33 


1160 


1070 


720 


61 


46 


105 


57 


39 


37 


31 


11 


33 




33 


1480 


908 


671 


62 


51 


105 


56 


39 


37 


30 


12 


33 




33 


3550 


764 


646 


62 


55 


100 


54 


38 


33 


31 


13 


34 




33 


1980 


599 


629 


61 


54 


91 


55 


37 


35 


32 


14 


34 




33 


765 


616 


651 


62 


68 


79 


55 


36 


36 


39 


15 


34 




33 


341 


514 


653 


62 


80 


71 


55 


37 


36 


42 


16 


33 




33 


78 


629 


631 


68 


76 


67 


49 


39 


36 


43 


17 


33 




36 


43 


637 


572 


89 


91 


66 


44 


40 


35 


39 


18 


34 




259 


39 


592 


407 


71 


94 


64 


43 


40 


34 


35 


19 


34 




39 


38 


544 


228 


51 


204 


63 


41 


40 


33 


34 


20 


34 




41 


37 


489 


130 


40 


122 


60 


40 


39 


42 


32 


21 


34 




37 


39 


517 


60 


40 


137 


59 


39 


38 


47 


32 


22 


34 




40 


40 


1380 


60 


40 


77 


60 


38 


37 


40 


32 


23 


34 




40 


40 


1930 


60 


41 


152 


65 


38 


37 


37 


31 


24 


34 




39 


39 


1290 


60 


45 


90 


96 


38 


38 


37 


30 


25 


34 




36 


38 


2970 


60 


39 


96 


63 


38 


40 


36 


30 


26 


34 




34 


489 


4000 


60 


39 


104 


60 


37 


39 


36 


31 


27 


34 




34 


2060 


2780 


61 


47 


105 


59 


37 


37 


36 


30 


28 


34 




33 


1250 


2090 


61 


41 


96 


59 


36 


37 


36 


29 


29 


34 




33 


1680 


1680 





38 


74 


60 


35 


37 


35 


28 


30 


34 




33 


4850 


1450 





38 


63 


60 


42 


37 


35 


29 


31 


34 







9330 


1300 





39 





60 





38 


34 





TOTAL 


1041 




1262 


31609 


92159 


14565 


1687 


2328 


2311 


1497 


1235 


1151 


988 


MEAN 


33.6 




42.1 


1020 


2973 


520 


54.4 


77.6 


74.5 


49.9 


39.8 


37.1 


32.9 


MAX 


34 




259 


9330 


21000 


1260 


89 


204 


105 


87 


66 


47 


43 


MIN 


33 




33 


34 


489 


60 


38 


38 


59 


35 


36 


33 


28 


AC -FT 


2060 




2500 


62700 


182800 


28890 


3350 


4620 


4580 


2970 


2450 


2280 


1960 


STATISTICS OF 


MONTHLY MEAN DATA 


FOR WATER 


YEARS 1969 


- 1997, 


, BY WATER 


YEAR (WY) 










MEAN 


30.6 




79.0 


174 


387 


235 


250 


167 


230 


116 


33.2 


29.7 


29.5 


MAX 


52.7 




462 


1040 


2973 


1521 


1228 


1368 


1697 


994 


49.6 


42.1 


39.6 


(WY) 


1983 




1982 


1982 


1997 


1986 


1995 


1982 


1995 


1995 


1983 


1984 


1986 


MIN 


16.6 




20.4 


20.7 


7.10 


28.0 


31.3 


33.9 


32.5 


28.8 


17.5 


13.0 


14.3 


(WY) 


1978 




1978 


1987 


1987 


1977 


1976 


1970 


1970 


1977 


1977 


1977 


1977 


SUMMARY STATISTICS 




FOR 


1996 CALENDAR YEAR 


FOR 1997 WATER YEAR 




WATER YEARS 1969 - 


1997 


ANNUAL 


TOTAL 








104484 






151833 












ANNUAL 


MEAN 








285 






416 






147 






HIGHEST ANNUAL MEAN 
















481 




1969 


LOWEST 


ANNUAL 


MEAN 


















26.3 




1977 


HIGHEST DAILY 


MEAN 






9330 


Dec 31 




21000 


Jan 2 




21000 


Jan 2 


1997 


LOWEST 


DAILY MEAN 






32 


Jan 6 




28 


Sep 29 




2.1 


Jan 10 


1982 


ANNUAL 


SEVEN-DAY MINIMUM 




32 


Jan 6 




30 


Sep 24 




3.2 


Oct 21 


1970 


INSTANTANEOUS 


PEAK 


FLOW 










27500 


Jan 2 




27500 


Jan 2 


1997 


INSTANTANEOUS 


PEAK 


, STAGE 










30.70 


Jan 2 




30.70 


Jan 2 


1997 


ANNUAL 


RUNOFF 


(AC- 


FT) 




207200 






301200 






106200 






10 PERCENT EXCEEDS 






698 






812 






169 






50 PERCENT EXCEEDS 






36 






42 






34 






90 PERCENT EXCEEDS 






33 






33 






26 







SACRAMENTO RIVER BASIN 
11409300 OREGON CREEK AT CAMPTONVILLE, CA 



231 



LOCATION.--Lat 39°26'46", long 12r02'43", in SE 1/4 NE 1/4 seel 1,T.18 N., R.8E., Yuba County, Hydrologic Unit 18020125, Tahoe National 
Forest, on right bank 25 ft downstream from county bridge, 0.5 mi southeast of Camptonville, and 5.5 mi upstream from mouth. 

DRAINAGE AREA.--23.0 mi^. 

PERIOD OF RECORD.-August 1967 to current year. 

GAGE.--Water-stage recorder. Elevation of gage is 2,230 ft above sea level, from topographic map. 

REMARKS. --Records good. No regulation or diversion upstream from station. See schematic diagram of Yuba River basin. 

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 5,170 ft^/s, Jan. 1, 1997, gage height, 11.31 ft, from rating curve extended above 
4,000 ft^/s, maximum gage height, 1 1.56 ft, Feb. 17, 1986; minimum daily, 0.53 ft^/s, Aug. 14-16, 1977, Sept. 6, 1988. 

EXTREMES FOR CURRENT YEAR.-Peak discharges greater than base discharge of 500 ft'/s, or maximum: 

Discharge Gage height Discharge Gage height 

Date Time (ft^/s) (ft) Date Time (ft^/s) (ft) 

Dec.6 0715 1,110 7.54 Jan. 1 1730 5,170 11.31 

Dec. 13 0215 1,490 8.08 Jan. 25 1415 1,940 8.62 



DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



NOV 



DEC 



JAN 



FEB 



MAR 



APR 



MAY 



JUN 



JUL 



1 


2.7 


4.6 


55 


3730 


237 


43 


32 




22 


8.3 


5.5 




2.3 


2.3 


2 


2.7 


4.1 


44 


3070 


206 


59 


31 




21 


8.2 


5.0 




2.2 


2.0 


3 


2.7 


3.8 


29 


1190 


179 


52 


29 




20 


8.5 


4.7 




2.2 


2.1 


4 


2.7 


3.8 


28 


667 


159 


47 


28 




20 


17 


4.5 




2.2 


2.2 


5 


2.6 


3.8 


33 


453 


141 


45 


26 




19 


16 


4.4 




2.2 


2.0 


e 


2.8 


3.8 


494 


331 


128 


43 


25 




18 


12 


4.3 




2.2 


1.9 


7 


2.6 


3.8 


228 


254 


119 


42 


25 




18 


9.8 


4.3 




2.3 


1.9 


8 


2.6 


3.7 


146 


199 


112 


40 


24 




18 


8.9 


4.1 




2.0 


1.8 


9 


2.5 


3.6 


114 


162 


104 


38 


23 




16 


8.5 


3.8 




2.0 


1.8 


10 


2.5 


3.5 


128 


139 


96 


37 


23 




15 


8.2 


3.7 




2.2 


1.7 


11 


2.5 


3.5 


587 


123 


89 


36 


22 




15 


7.9 


3.7 




2.0 


1.7 


12 


2.5 


3.5 


702 


112 


84 


35 


22 




14 


7.6 


3.6 




2.1 


1.7 


13 


2.6 


3.5 


942 


101 


79 


33 


21 




13 


7.9 


3.5 




2.1 


1.8 


14 


2.7 


3.3 


470 


92 


73 


33 


21 




13 


7.5 


3.5 




2.1 


1.8 


15 


2.7 


3.3 


329 


90 


70 


32 


21 




12 


7.6 


3.4 




2.0 


2.8 


16 


2.6 


3.7 


204 


83 


67 


42 


20 




12 


7.1 


3.2 




2.0 


2.8 


17 


2.7 


41 


156 


76 


71 


64 


20 




12 


6.7 


3.3 




2.1 


2.3 


18 


3.3 


119 


120 


70 


67 


56 


21 




11 


6.4 


3.1 




1.9 


2.1 


19 


3.9 


58 


96 


66 


65 


53 


39 




10 


6.2 


3.0 




1.9 


2.1 


20 


3.5 


59 


92 


81 


63 


52 


28 




10 


6.1 


2.9 




3.1 


2.0 


21 


3.2 


27 


82 


96 


60 


50 


26 




9.7 


5.9 


2.8 




3.4 


1.9 


22 


3.2 


51 


116 


471 


57 


49 


25 




9.5 


5.5 


2.7 




2 .7 


1.9 


23 


3.2 


62 


121 


555 


54 


48 


35 




12 


5.4 


2.6 




2.5 


1.8 


24 


3.9 


32 


105 


333 


52 


46 


29 




16 


5.3 


2.8 




2.6 


1.9 


25 


6.1 


24 


81 


1030 


49 


44 


26 




12 


5.2 


2.9 




2.7 


1.9 


26 


4.8 


20 


293 


1310 


48 


42 


25 




11 


5.0 


2.9 




2.7 


1.8 


27 


3.9 


17 


928 


779 


47 


41 


24 




10 


4.9 


2.9 




2.6 


1.8 


28 


3.6 


16 


798 


539 


45 


39 


24 




9.5 


4.7 


2.7 




2.6 


1.8 


29 


4.6 


14 


774 


404 





37 


23 




9.3 


4.7 


2.6 




2.5 


1.7 


30 


8.8 


12 


1450 


325 





36 


22 




9.0 


4.9 


2.4 




2.5 


1.7 


31 


5.8 


--- 


2270 


269 





37 







8.5 





2.4 




2.5 





TOTAL 


106.5 


611.3 


12015 


17200 


2621 


1351 


760 




425.5 


227.9 


107.2 




72.4 


59.0 


MEAN 


3.44 


20.4 


388 


555 


93.6 


43.6 


25.3 




13.7 


7.60 


3.46 




2.34 


1.97 


MAX 


8.8 


119 


2270 


3730 


237 


64 


39 




22 


17 


5.5 




3.4 


2.8 


MIN 


2.5 


3.3 


28 


66 


45 


32 


20 




8.5 


4.7 


2.4 




1.9 


1.7 


AC -FT 


211 


1210 


23830 


34120 


5200 


2680 


1510 




844 


452 


213 




144 


117 


STATISTICS OF 


MONTHLY MEAN DATA 


FOR WATER YEARS 1968 


- 1997 


, BY WATER 


YEAR (WY) 












MEAN 


5.32 


34.0 


87.4 


161 


153 


170 


111 




61.0 


17.6 


5.66 




2.78 


2.77 


MAX 


16.9 


214 


407 


555 


664 


453 


391 




198 


47.8 


13.0 




5.83 


9.12 


(WY) 


1982 


1974 


1984 


1997 


1986 


1989 


1982 




1995 


1983 


1995 




1983 


1983 


MIN 


.84 


3.03 


2.30 


3.88 


6.28 


10.8 


7.64 




9.45 


3.61 


1.11 




.68 


.67 


(WY) 


1989 


1991 


1977 


1991 


1991 


1977 


1977 




1987 


1987 


1977 




1977 


1988 


SUMMARY STATISTICS 


FOR 


1996 CALENDAR YEAR 




FOR 1997 


WATER YEAR 




WATER 


YEARS 1968 - 


1997 


ANNUAL 


TOTAL 






45855.6 






35556. 


.8 














ANNUAL 


MEAN 






125 






97. 


.4 






67. 


3 






HIGHEST ANNUAL MEAN 


















146 






1982 


LOWEST 


ANNUAL 


MEAN 


















5. 


38 




1977 


HIGHEST DAILY 


MEAN 




2270 


Dec 31 




3730 




Jan 1 




3730 




Jan 1 


1997 


LOWEST 


DAILY MEAN 




2.5 


Oct 9 




1. 


,7 


Sep 10 






.53 


Aug 14 


1977 


ANNUAL 


SEVEN-DAY MINIMUM 




2.5 


Oct 7 




1. 


.8 


Sep 8 






54 


Aug 11 


1977 


INSTANTANEOUS 


PEAK FLOW 










5170 




Jan 1 




517o' 




Jan 1 


1997 


INSTANTANEOUS 


PEAK STAGE 










11. 


31 


Jan 1 




11. 


56 


Feb 17 


1986 


ANNUAL 


RUNOFF 


(AC-FT) 




90950 






70530 








48750 








10 PERCENT EXCEEDS 




312 






160 








170 








50 PERCENT EXCEEDS 




43 






12 








14 








90 PERCENT EXCEEDS 




3.0 






2. 


.2 






2 , 


,1 







232 



SACRAMENTO RIVER BASIN 
1 1409350 CAMPTONVILLE TUNNEL AT INTAKE, NEAR CAMPTONVILLE, CA 



LOCATION.--Ut 39°26'25 ", long nPOS'SO", in NW 1/4 SW 1/4 seel 1, T.18 N., R.8 E., Yuba County, Hydrologic Unit 18020125, Tahoe 
National Forest, at tunnel intake at Log Cabin Dam 1.0 nii southwest of town of Camptonville. 

PERIOD OF RECORD.--October 1988 to current year. Records of monthly diversion published with Oregon Creek below Log Cabin Dam near 
Camptonville (station 1 1409400) for water years 1969-88. 

GAGE. --Water-stage recorder. Datum of gage is 1,952.00 ft above sea level (from contractor's drawings). 

REMARKS -Records fair. Water is diverted to Oregon Creek from the Middle Yuba River through Lohman Ridge Tunnel (station 1 1408870) 
1,000 ft upstream. Camptonville Tunnel diverts water from Oregon Creek to New Bullards Bar Reservoir (station 11413515) for power 
development. See schematic diagram of Yuba River basin. 

EXTREMES FOR PERIOD OF RECORD.-Maximum daily discharge, 1,090 ft^/s. Mar. 25, 1989; no flow for many days each year. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



NOV 



DEC 



JAN 



FEB 



MAR 



APR 



MAY 



JUN 



JUL 



1 


3.6 


13 


259 


106 


278 


297 


356 


270 


60 


3.7 


.05 


.21 


2 


3.7 


10 


242 


148 


237 


354 


301 


240 


56 


5.3 


.00 


.21 


3 


3.4 


8.9 


150 


22 


204 


329 


275 


211 


55 


19 


.00 


1.1 


4 


2.6 


8.3 


146 


13 


181 


297 


259 


207 


99 


24 


.00 


.82 


5 


2.5 


8.5 


871 


14 


156 


287 


226 


205 


104 


19 


.00 


.00 


6 


2.0 


7.4 


845 


14 


137 


277 


216 


205 


83 


16 


.00 


.00 


7 


1.6 


6.6 


666 


15 


125 


270 


202 


205 


63 


15 


.00 


.00 


8 


1.1 


6.6 


539 


15 


116 


266 


196 


206 


57 


14 


.90 


.00 


9 


.97 


6.6 


628 


16 


106 


262 


194 


203 


51 


13 


1.5 


.00 


10 


1.1 


6.6 


974 


16 


98 


266 


188 


200 


56 


13 


1.6 


.38 


11 


.92 


5.8 


976 


16 


91 


280 


176 


199 


48 


13 


.88 


.85 


12 


1.0 


5.7 


825 


17 


85 


236 


165 


193 


44 


12 


.06 


1.2 


13 


1.2 


5.1 


943 


18 


78 


211 


163 


192 


47 


12 


.00 


.72 


14 


1.4 


5.3 


920 


17 


74 


205 


150 


188 


43 


11 


.00 


.86 


15 


1.4 


6.1 


814 


18 


70 


214 


157 


182 


39 


9.4 


.00 


.87 


16 


.95 


7.7 


732 


20 


67 


274 


178 


177 


40 


7.4 


.00 


.84 


17 


1.1 


170 


642 


21 


73 


364 


183 


169 


42 


6.9 


.00 


.98 


18 


5.4 


677 


540 


21 


190 


340 


223 


158 


39 


6.2 


.00 


.00 


19 


9.3 


352 


468 


22 


374 


339 


470 


154 


38 


6.0 


.00 


.00 


20 


6.3 


498 


421 


53 


396 


355 


472 


132 


36 


5.6 


.07 


.00 


21 


4.3 


200 


617 


82 


410 


373 


482 


111 


34 


5.3 


.07 


.00 


22 


3.9 


398 


590 


306 


392 


392 


502 


97 


32 


4.9 


.00 


.56 


23 


3.7 


472 


559 


421 


366 


413 


546 


102 


31 


4.8 


.00 


1.1 


24 


8.4 


243 


473 


368 


347 


422 


479 


132 


30 


5.4 


.00 


1.0 


25 


40 


165 


414 


498 


339 


434 


377 


119 


29 


5.5 


.00 


.52 


26 


20 


122 


629 


249 


328 


436 


328 


96 


27 


4.0 


.00 


.00 


27 


9.9 


97 


894 


486 


336 


459 


329 


85 


25 


3.3 


.00 


.00 


28 


7.0 


87 


897 


557 


322 


501 


334 


78 


24 


2.9 


.00 


.00 


29 


15 


78 


806 


447 





469 


321 


74 


24 


3.1 


.00 


.00 


30 


33 


67 


743 


377 





434 


293 


70 


18 


2.7 


.00 


.00 


31 


19 


--- 


247 


318 


--- 


424 


--- 


65 


--- 


1.9 


.00 





TOTAL 


215.74 


3744.2 


19470 


4711 


5976 


10480 


8741 


4925 


1374 


275.3 


5.13 


12.22 


MEAN 


6.96 


125 


628 


152 


213 


338 


291 


159 


45.8 


8.88 


.17 


.41 


MAX 


40 


677 


976 


557 


410 


501 


546 


270 


104 


24 


1.6 


1.2 


MIN 


.92 


5.1 


146 


13 


67 


205 


150 


65 


18 


1.9 


.00 


.00 


AC -FT 


428 


7430 


38620 


9340 


11850 


20790 


17340 


9770 


2730 


546 


10 


24 



STATISTICS OP MONTHLY MEAN DATA FOR WATER YEARS 1989 - 1997, BY WATER YEAR (WY) 



MEAN 


11.5 


39.0 


147 


255 


339 


524 


514 


319 


213 


62.7 


6.66 


2.34 


MAX 


54.9 


125 


628 


695 


668 


793 


867 


820 


542 


347 


33.8 


8.04 


(WY) 


1990 


1997 


1997 


1995 


1993 


1993 


1995 


1996 


1993 


1995 


1995 


1996 


MIN 


.000 


1.28 


.83 


1.16 


16.7 


308 


173 


53.2 


7.22 


.11 


.000 


.000 


(WY) 


1989 


1991 


1991 


1991 


1991 


1994 


1994 


1992 


1992 


1994 


1992 


1991 



SUMMARY STATISTICS 



FOR 199 6 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1989 - 1997 



ANNUAL TOTAL 


138431.84 






59929 


.59 












ANNUAL MEAN 


378 






164 






202 








HIGHEST ANNUAL MEAN 














335 






1993 


LOWEST ANNUAL MEAN 














75.7 






1994 


HIGHEST DAILY MEAN 


1060 


May 


17 


976 




Dec 11 


1090 


Mar 


25 


1989 


LOWEST DAILY MEAN 


.92 


Oct 


11 




.00 


Aug 2 


.00 


Oct 


1 


1988 


ANNUAL SEVEN-DAY MINIMUM 


1.1 


Oct 


8 




,00 


Aug 13 


.00 


Oct 


1 


1988 


ANNUAL RUNOFF (AC-FT) 


274600 






118900 






146300 








10 PERCENT EXCEEDS 


860 






469 






690 








50 PERCENT EXCEEDS 


212 






60 






50 








90 PERCENT EXCEEDS 


5.4 








.00 




.00 









SACRAMENTO RIVER BASIN 233 

1 1409400 OREGON CREEK BELOW LOG CABIN DAM. NEAR CAMPTONVO-LE, CA 

LOCATION.--Lat 39°26'22", long 12r03'29", in SW 1/4 SW 1/4 seel 1, T.18 N., R.8 E., Yuba County, Hydrologic Unit 18020125, Tahoe 
National Forest, on left bank 500 ft downstream from Log Cabin Dam, 670 ft upstream from High Point Ravine, and 1.1 mi southwest of 
Camptonville. 

DRAINAGE AREA.-29. 1 mi^. 

PERIOD OF RECORD.-August 1968 to current year. 
WATER TEMPERATURE; Water years 1972-79. 

REVISED RECORDS.--WDR CA-81-4: 1980(M). 

GAGE.-Water-stage recorder, sharp-crested weir since Nov. 13, 1990, and crest-stage gage. Datum of gage is 1,912.73 ft above sea level (levels 
by Yuba County Water Agency). Prior to July 24, 1973, at site 470 ft downstream at datum 8.40 ft lower. July 24, 1973, to Sept. 30, 1986, at 
site on right bank. Oct. 1, 1986, to Nov. 13, 1990, a sharp-crested weir was put in at same location and gage house located on left bank. The 
weir was deemed too shallow so a new sharp-crested weir was put in 70 ft downstream at a datum 7.24 ft lower. 

REMARKS. -Records good. Lohman Ridge Tunnel (station 11408870) diverts water into the basin from the Middle Yuba River. Camptonville 
Tunnel (station 1 1409350), maximum capacity, about 1,000 ft^/s, 520 ft upstream, diverts water out of the basin to New BuUards Bar Reservoir 
(station 11413515); diversion began October 1968. See schematic diagram of Yuba River basin. 

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 6,400 ft^/s, Feb. 17, 1986, gage height, 1 1 .24 ft, datum then in use, from rating 
curve extended above 50 ft'/s based on flow-over-dam computation, maximum gage height 15.70 ft (from floodmark), Jan. 1 , 1997; minimum 
daily, 0.34 ft'/s, Sept. 18, 1972. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



NOV 



DEC 



JAN 



FEB 



MAR 



APR 



11AY 



JUN 



JUL 



1 


10 




10 


15 


4160 


16 


15 


9 


6 


13 


12 




7.6 


4.3 


3.8 


2 


10 




10 


15 


3840 


15 


15 


9 


5 


13 


12 




8.4 


4.1 


3.6 


■ 3 


10 




10 


13 


1410 


15 


15 


9 


5 


13 


12 




9.8 


4.0 


3.2 


4 


10 




10 


13 


660 


15 


14 


9 


5 


13 


14 




9.6 


4.0 


3.5 


5 


10 




10 


485 


380 


14 


15 


9 


3 


13 


14 




8.2 


4.0 


3.5 


6 


10 




10 


30 


200 


14 


14 


9 


4 


13 


13 




7.6 


3.9 


3.3 


7 


10 




10 


20 


170 


14 


14 


9 


4 


13 


13 




7.9 


3.8 


3.1 


8 


9 


9 


10 


19 


280 


14 


14 


10 




13 


12 




7.9 


3.1 


3.2 


9 


10 




10 


19 


240 


14 


14 


11 




13 


12 




7.8 


2.8 


3.4 


10 


9 


9 


10 


330 


210 


13 


14 


11 




13 


13 




7.7 


2.7 


3.4 


11 


9 


8 


10 


516 


180 


12 


15 


10 




13 


12 




7.6 


3.6 


3.1 


12 


9 


8 


10 


710 


170 


12 


14 


10 




13 


12 




7.6 


3.9 


3.0 


13 


9 


8 


10 


172 


150 


12 


14 


11 




13 


12 




7.6 


4.2 


3.0 


14 


9 


9 


10 


52 


130 


12 


14 


11 




13 


12 




7.7 


4.1 


3.1 


15 


9 


8 


10 


22 


125 


12 


14 


14 




13 


12 




7.5 


4.0 


4.4 


16 


9 


8 


10 


19 


101 


11 


15 


14 




13 


11 




7.1 


3.8 


4.5 


17 


9 


9 


14 


16 


90 


12 


16 


14 




13 


10 




7.2 


3.6 


4.0 


18 


10 




21 


16 


83 


13 


16 


14 




13 


9 


5 


7.1 


3.6 


3.9 


19 


10 




16 


15 


76 


14 


14 


16 




13 


9 


3 


7.0 


3.6 


3.7 


20 


10 




16 


14 


56 


14 


14 


17 




12 


9 


1 


6.9 


6.2 


3.7 


21 


10 




13 


16 


22 


15 


13 


16 




13 


9 


1 


6.9 


6.9 


3.5 


22 


10 




16 


16 


277 


15 


13 


17 




13 


9 





6.9 


5.3 


3.2 


23 


10 




18 


15 


252 


15 


13 


17 




13 


9 





6.8 


4.6 


3.0 


24 


10 




16 


15 


23 


15 


12 


16 




14 


8 


9 


6.9 


4.6 


3.0 


25 


12 




14 


14 


649 


15 


12 


15 




14 


8 


9 


6.9 


4.5 


3.1 


26 


12 




12 


268 


1240 


15 


12 


14 




13 


8 


8 


6.6 


4.3 


3.2 


27 


11 




12 


710 


359 


15 


11 


14 




13 


8 


8 


6.5 


4.1 


3.0 


28 


11 




12 


210 


23 


15 


10 


14 




13 


8 


7 


6.5 


4.1 


3.1 


29 


11 




12 


290 


21 





10 


14 




13 


8 


8 


6.5 


3.9 


3.1 


30 


11 




12 


1000 


17 





10 


13 




12 


8 


2 


6.4 


3.9 


2.9 


31 


11 




--- 


2150 


16 





9.9 


- 


-- 


12 


- 


-- 


5.9 


3.7 





TOTAL 


317 


6 


364 


7216 


15610 


388 


415.9 


379 


2 


402 


324 


1 


228.6 


127.2 


101.5 


MEAN 


10 


2 


12.1 


233 


504 


13.9 


13.4 


12 


6 


13.0 


10 


8 


7.37 


4.10 


3.38 


MAX 


12 


21 


2150 


4160 


16 


16 


17 


14 


14 


9.8 


6.9 


4.5 


MIN 


9 


8 


10 


13 


16 


11 


9.9 


9 


3 


12 


8 


2 


5.9 


2.7 


2.9 


AC -FT 


630 


722 


14310 


30960 


770 


825 


752 


797 


643 


453 


252 


201 



234 



SACRAMENTO RIVER BASIN 
1 1409400 OREGON CREEK BELOW LOG CABIN DAM, NEAR CAMPTONVILLE, CA— Continued 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1968 - 1997, BY WATER YEAR (WY) 
OCT NOV DEC JAN FEB MAR APR MAY 



MEAN 


6.50 


16.5 


52.3 


102 


63.5 


48.1 


30.4 


19.8 


11.5 


8.37 


6.51 


5.78 


MAX 


12.8 


72.5 


273 


604 


617 


189 


268 


111 


22.0 


15.2 


13.1 


14.3 


(WY) 


1972 


1982 


1982 


1969 


1986 


1969 


1969 


1969 


1969 


1983 


1983 


1984 


MIN 


1.95 


2.27 


1.97 


4.57 


3.39 


7.14 


8.11 


8.00 


4.89 


1.82 


1.32 


1.37 


(WY) 


1989 


1977 


1977 


1977 


1977 


1977 


1986 


1986 


1987 


1977 


1977 


1988 



SUMMARY STATISTICS 

ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC-FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1968 - 1997 



20379, 


.6 






25874.1 












55. 


,7 






70.9 






30.9 
128 
4.20 




1969 

1977 


2150 




Dec 


31 


4160 


Jan 


1 


5340 


Feb 


17 1986 


9. 


8 


Oct 


11 


2.7 


Aug 


10 


.34 


Sep 


18 1972 


9. 


.8 


Oct 


10 


3.1 


Sep 


24 


.74 


Sep 


18 1972 










5980 


Jan 


1 


6400 


Feb 


17 1986 










15.70 


Jan 


1 


15.70 


Jan 


1 1997 


40420 








51320 






22360 






106 








54 






18 






14 








12 






10 






10 








3.9 






3.3 







SACRAMENfTO RIVER BASIN 235 

1 1413000 NORTH YUBA RIVER BELOW GOODYEARS BAR, CA 

LOCATION.--Ut39°3r30",long 120°56'13", inNE 1/4SW 1/4 sec.Il, T.19 N., R.9 E., Sierra County, Hydrologic Unit 18020125, Tahoe 
National Forest, on right bank 200 ft downstream from St. Catherine Creek, 3.1 mi southwest of Goodyears Bar, and 6.4 mi southwest of 
Downieville. 

DRAINAGE AREA.--250 mi^. 

PERIOD OF RECORD.-October 1930 to cunent year. Prior to October 1949, published as North Fork Yuba River below Goodyears Bar. Monthly 
and yearly discharge only for some periods, published in WSP 1315-A. 

REVISED RECORDS.--WSP 1041: 1944. WSP 1 93 1 : Drainage area. 

GAGE.--Water-stage recorder. Datum of gage is 2,453 ft above sea level (river-profile survey). 

REMARKS. --Records good except for periods of estimated daily discharge, which are fair. Several small diversions upstream from station for 
irrigation and mining. See schematic diagram of Yuba River basin. 

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 45,500 ft'/s, Jan. 2, 1997, gage height, 25.65 ft, from rating curve extended above 
1 1,900 ft'/s on basis of one float measurement at 17,900 ft"/s and slope-area measurements at gage heights 19.15 and 23.8 ft; minimum daily, 
60 ft^/s. Sept. 7-14, 1977. 

EXTREMES FOR CURRENT YEAR.-Peak discharges greater than base discharge of 3,200 ft^/s. or maximum: 

Discharge Gage height Discharge 

(ftVs) (ft) Date Time (ft'/s) 



Date 
Dec. 5 
Dec. 12 
Jan. 2 



Time 
0830 
0315 
1800 



6,950 
11,000 
45,500 



10.76 
12.95 

25.65 



Jan. 26 
Apr. 23 



0430 
0715 



7,490 
3,580 



DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



Gage height 

(ft) 

11.09 

8.21 



NOV 



DEC 



JAN 



FEB 



MAR 



APR 



MAY 



JUN 



JUL 



SEP 



1 


173 


178 


521 


625600 


1950 


744 


1110 


1420 


728 


339 


198 


163 


2 


173 


176 


410 


629600 


1850 


805 


1020 


1350 


693 


312 


196 


163 


3 


171 


173 


340 


614500 


1690 


749 


964 


1330 


665 


298 


194 


168 


4 


170 


171 


365 


67510 


1570 


715 


939 


1430 


1090 


287 


192 


166 


5 


168 


170 


4280 


65240 


1460 


706 


912 


1470 


852 


279 


189 


162 


6 


166 


166 


1950 


63790 


1360 


695 


880 


1480 


710 


272 


187 


161 


7 


164 


165 


1210 


62970 


1290 


688 


854 


1500 


644 


269 


184 


159 


e 


161 


164 


1030 


62510 


1230 


690 


847 


1540 


609 


264 


181 


158 


9 


161 


162 


1640 


62180 


1170 


693 


844 


1640 


608 


259 


180 


157 


10 


160 


161 


4390 


62030 


1120 


717 


806 


1720 


590 


256 


179 


156 


11 


160 


160 


5250 


1830 


61080 


763 


797 


1740 


567 


251 


179 


156 


12 


161 


159 


8090 


1750 


61040 


760 


807 


1690 


526 


251 


179 


156 


13 


162 


157 


4790 


1570 


e995 


735 


817 


1650 


587 


246 


178 


156 


li 


161 


158 


2810 


1460 


979 


738 


871 


1570 


553 


241 


178 


157 


15 


160 


159 


1940 


1390 


970 


785 


968 


1520 


515 


236 


176 


192 


16 


160 


159 


1530 


1290 


968 


957 


1070 


1440 


480 


233 


173 


176 


17 


160 


650 


1290 


1210 


1020 


1040 


1190 


1380 


452 


233 


171 


167 


18 


169 


1940 


1110 


1180 


1000 


994 


1370 


1330 


428 


230 


172 


162 


19 


186 


1180 


981 


1150 


960 


996 


2690 


1250 


409 


228 


172 


164 


20 


174 


1140 


912 


1150 


930 


1050 


2270 


1180 


396 


224 


198 


162 


21 


169 


574 


1060 


1190 


6893 


1150 


3250 


1070 


381 


220 


198 


158 


22 


167 


839 


1040 


1620 


6879 


1260 


2580 


986 


367 


216 


183 


155 


23 


167 


732 


1020 


2150 


848 


1350 


2900 


1070 


358 


212 


177 


154 


24 


180 


503 


954 


1870 


813 


1400 


2130 


1100 


348 


215 


178 


153 


25 


246 


415 


888 


4330 


794 


1410 


1810 


943 


339 


219 


175 


153 


26 


195 


359 


1770 


6020 


791 


1490 


1770 


862 


330 


213 


173 


154 


27 


178 


320 


4190 


3780 


801 


1620 


1900 


809 


320 


213 


171 


152 


28 


175 


306 


3290 


2860 


768 


1550 


1830 


796 


310 


217 


170 


150 


29 


207 


286 


4370 


2490 





1370 


1620 


789 


306 


220 


168 


150 


30 


214 


264 


10200 


2140 





1310 


1480 


780 


319 


208 


167 


150 


31 


186 


... 


18000 


1960 


— - 


1240 





759 





202 


165 





TOTAL 


5404 


12146 


91621 


140320 


31219 


31170 


43296 


39594 


15480 


7563 


5581 


4790 


MEAN 


174 


405 


2956 


4526 


1115 


1005 


1443 


1277 


516 


244 


180 


160 


MAX 


246 


1940 


18000 


29600 


1950 


1620 


3250 


1740 


1090 


339 


198 


192 


MIN 


160 


157 


340 


1150 


768 


688 


797 


759 


306 


202 


165 


150 


AC -FT 


10720 


24090 


181700 


278300 


61920 


61830 


85880 


78530 


30700 


15000 


11070 


9500 


e Estimated. 

























236 



SACRAMENTO RIVER BASIN 



1 1413000 NORTH YUBA RIVER BELOW GOODYEARS BAR. CA-Continued 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1931 



1997, BY WATER YEAR (WY) 



OCT 



NOV 



MEAN 187 357 

MAX 1407 2380 

(WY) 1963 1951 

MIN 71.8 107 

(WY) 1978 1978 

SUMMARY STATISTICS 

ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC-FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



DEC 

661 
3830 
1965 
97.3 
1977 



JAN 

879 
4526 
1997 

117 
1991 



FEB 

949 
4367 
1986 

138 
1977 



MAR 

1067 
3074 
1995 

151 
1977 



APR 

1381 
2822 
1982 
241 
1977 



MAY 

1790 
3894 
1952 
335 
1977 



FOR 1996 CALENDAR YEAR 

484034 
1322 



18000 
157 
159 



960100 

2510 

859 

175 



Dec 31 
Nov 13 
Nov 10 



FOR 1997 WATER YEAR 

428184 
1173 



29600 Jan 2 
150 Sep 28 
152 Sep 24 
45500 Jan 2 
25.65 Jan 2 
849300 
1950 
706 
162 



JUN 

1101 
3627 
1983 
170 
1992 



JUL 



AUG 



364 185 

1384 417 

1983 1983 

82.7 66.8 

1977 1977 



SEP 

150 

256 

1983 

71.0 

1977 



WATER YEARS 1931 - 1997 



755 

1566 

141 

29600 Jan 2 
60 Sep 7 
60 Sep 7 
45500 Jan 2 
25.65 Jan 2 
546600 
1860 
328 
126 



1982 

1977 
1997 
1977 
1977 
1997 
1997 



SACRAMENTO RIVER BASEN 
1 1413250 SLATE CREEK TUNNEL NEAR STRAWBERRY VALLEY, CA 



237 



LOCATION.-Ut 39''36'57", long 121°O3'03", in SE 1/4 SW 1/4 sec.2, T.20 N., R.8 E.. Plumas County. Hydrologic Unit 18020125, Plumas 
National Forest, on right bank 30 ft upstream from diversion dam on Slate Creek, 0.3 mi upstream from Feney Ravine, and 4.5 mi northeast 
of town of Strawberry Valley. 

PERIOD OF RECORD. -February 1962 to current year. Monthly discharge only published as adjustment to Slate Creek below diversion dam near 
Strawberry Valley (station 1 1413300) February 1962 to September 1966; records of daily discharge are in files of the U.S. Geological Survey. 
GAGE.-Water-stage recorder. Datum of gage is sea level. 

REMARKS. -Tunnel diverts water from Slate Creek to Sly Creek Reservoir (station 1 1395400) for power development. See schematic diagrams 
of South Fork Feather and Yuba River basins. 

COOPERATION.-Records provided by Oroville-Wyandotte Irrigation District, under general supervision of the U.S. Geological Survey, in 
connection with a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD.-Maximum daily discharge, 863 ft^/s, Apr. 6, 1963; no flow for many days in each year. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 

DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 



1 


.00 




.00 


86 




.00 


414 


103 


163 


161 


32 


11 




.00 


.00 


2 


.00 




.00 


60 




.00 


404 


115 


145 


141 


29 


8 


.8 


.00 


.00 


3 


.00 




.00 


47 




.00 


389 


103 


133 


130 


30 


8 


.0 


.00 


.00 


4 


.00 




.00 


74 




.00 


345 


96 


126 


128 


67 


7 


.1 


.00 


.00 


5 


.00 




.00 


513 




.00 


299 


96 


117 


122 


52 


6 


.5 


.00 


.00 


6 


.00 




.00 


462 




.00 


263 


95 


109 


117 


39 


5 


.8 


.00 


.00 


7 


.00 




.00 


336 




.00 


239 


96 


104 


114 


35 


2 


.1 


.00 


.00 


8 


.00 




.00 


295 




.00 


218 


97 


103 


114 


32 




.00 


.00 


.00 


9 


.00 




.00 


224 




.00 


199 


99 


103 


115 


43 




.00 


.00 


.00 


10 


.00 




.00 


e432 




.00 


184 


106 


96 


113 


41 




.00 


.00 


.00 


11 


.00 




.00 


e812 




.00 


171 


118 


92 


111 


34 




.00 


.00 


.00 


12 


.00 




.00 


e720 




.00 


161 


116 


90 


106 


29 




.00 


.00 


.00 


13 


.00 




.00 


e306 




.00 


149 


110 


89 


98 


38 




.00 


.00 


.00 


14 


.00 




.00 




.00 


.00 


144 


110 


94 


90 


30 




.00 


.00 


.00 


15 


.00 




.00 




.00 


.00 


147 


121 


101 


85 


27 




.00 


.00 


.00 


16 


.00 




.00 




.00 


5.5 


151 


175 


111 


80 


24 




.00 


.00 


.00 


17 


.00 




.00 




,00 


58 


182 


263 


119 


74 


21 




.00 


.00 


.00 


18 


.00 




.00 




.00 


107 


171 


246 


147 


70 


19 




.00 


.00 


.00 


19 


.00 


28 






.00 


98 


160 


227 


499 


65 


17 




.00 


.00 


.00 


20 


.00 


92 






,00 


115 


151 


226 


315 


60 


16 




.00 


.00 


.00 


21 


.00 


122 






.00 


129 


139 


251 


517 


54 


15 




.00 


.00 


.00 


22 


.00 


295 






.00 


216 


131 


270 


357 


48 


14 




.00 


.00 


.00 


23 


.00 


179 






.00 


178 


122 


276 


454 


60 


13 




.00 


.00 


.00 


24 


.00 


100 




71 




4.4 


113 


272 


301 


73 


12 




.00 


.00 


.00 


25 


.00 


71 




134 




7.4 


112 


266 


243 


54 


11 




.00 


.00 


.00 


26 


.00 


54 




287 




7.4 


116 


273 


222 


46 


10 




.00 


.00 


.00 


27 


.00 


42 




496 




229 


119 


274 


216 


42 


9.7 




.00 


.00 


.00 


28 


.00 


36 




444 




202 


110 


247 


201 


39 


8.9 




.00 


.00 


.00 


29 


.00 


31 




357 




17 





214 


189 


38 


8.8 




.00 


.00 


.00 


30 


.00 


27 




227 




.00 





200 


167 


36 


9.4 




.00 


.00 


.00 


31 


.00 




--- 


10 




226 





191 





34 







.00 


.00 


— 


TOTAL 


0.00 


1077 


.00 


6393 


.00 


1599.70 


5503 


5452 


5723 


2618 


766.8 


49 


.30 


0.00 


0.00 


MEAN 


.000 


35.9 


206 


51.6 


197 


176 


191 


84.5 


25.6 


1 


.59 


.000 


.000 


MAX 


.00 


295 


812 


229 


414 


276 


517 


161 


67 




11 


.00 


.00 


MIN 


.00 




.00 




.00 


.00 


110 


95 


89 


34 


8.8 




.00 


.00 


.00 


AC -FT 


.00 


2140 


12680 


3170 


10920 


10810 


11350 


5190 


1520 




98 


.00 


.00 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1963 - 1997, BY WATER YEAR (WY) 



MEAN 


8.74 


63.5 


90.6 


118 


144 


213 


228 


198 


103 


22.1 


3.08 


1.61 


MAX 


43.5 


321 


302 


408 


595 


588 


690 


638 


360 


144 


24.2 


21.1 


(WY) 


1983 


1984 


1967 


1995 


1996 


1993 


1993 


1973 


1995 


1983 


1983 


1986 


MIN 


.000 


.000 


.000 


.000 


.000 


.000 


.000 


.000 


.028 


.000 


.000 


.000 


(WY) 


1963 


1963 


1974 


1965 


1965 


1969 


1969 


1977 


1977 


1966 


1963 


1963 



SUMMARY STATISTICS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



e Estimated. 



WATER YEARS 1963 - 1997 



ANNUAL TOTAL 


66806. 


,50 






29181.80 














ANNUAL MEAN 


183 








80.0 






99.1 








HIGHEST ANNUAL MEAN 
















209 






1995 


LOWEST ANNUAL MEAN 
















.002 






1977 


HIGHEST DAILY MEAN 


854 




Feb 


19 


812 


Dec 


11 


863 


Apr 


6 


1963 


LOWEST DAILY MEAN 




,00 


Apr 


4 


.00 


Oct 


1 


.00 


Oct 


1 


1962 


ANNUAL SEVEN-DAY MINIMUM 




.00 


Apr 


4 


.00 


Oct 


1 


.00 


Oct 


1 


1962 


ANNUAL RUNOFF (AC -FT) 


132500 








57880 






71810 








10 PERCENT EXCEEDS 


520 








241 






323 








50 PERCENT EXCEEDS 


56 








16 






15 








90 PERCENT EXCEEDS 




.00 






.00 






.00 









238 



SACRAMENTO RIVER BASIN 
1 1413300 SLATE CREEK BELOW DIVERSION DAM, NEAR STRAWBERRY VALLEY, CA 



LOCATION.--Lat 39°36'52", long 12r03'04', in SE 1/4 SW 1/4 sec.2, T.20 N., R.8 E., Plumas County, Hydrologic Unit 18020125, Plumas 
National Forest, on right bank 300 ft downstream from diversion dam, 0.2 mi upstream from Feney Ravine, and 4.S mi northeast of town of 
Strawberry Valley. 

DRAINAGE AREA.--49.4 nu^. 

PERIOD OF RECORD.-October 1960 to current year. 

GAGE.-Water-stage recorder and 130° V-notch weir since October 1982. Elevation of gage is 3,570 ft above sea level, from topographic map. 

REMARKS. --Slate Creek Tunnel (station 1 1413250) diverts up to 900 fr'/s from Slate Creek Reservoir, capacity, 223 acre-ft, at diversion dam 

300 ft upstream, to Sly Creek Reservoir (station 1 1 395400). Diversion began in February 1 962. See schematic diagrams of South Fork Feather 

and Yuba River basins. 

COOPERATION.-Records provided by Oroville- Wyandotte Irrigation District, under general supervision of the U.S. Geological Survey, in 

connection with a Federal Energy Regulatory Commission project. 
EXTREMES FOR PERIOD OF RECORD.-Creek only: Maximum discharge, 17.300 ft^/s, Jan. 1, 1997, gage height, 17.20 ft, from rating curve 

extended above 5,500 ft'/s on basis of computed flow over dam at gage heights 12.75, 15.90, 16.89 and 17.20 ft; minimum, 0.3 ft-'/s. 

Mar. 4, 5, 1962. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALVES 

DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 



1 


11 


16 


15 


12100 


27 


16 


15 






11 


11 


9.4 


2 


11 


15 


15 


6940 


26 


16 


15 






11 


11 


9.5 


3 


11 


14 


15 


2490 


26 


15 


15 






11 


11 


9.6 


4 


11 


14 


15 


1460 


26 


15 


15 






11 


11 


9.5 


5 


10 


14 


806 


1040 


26 


15 


15 






11 


10 


9.2 


6 


10 


13 


168 


775 


25 


15 


15 






11 


10 


9.1 


7 


10 


13 


15 


605 


25 


15 


15 






15 


10 


9.0 


8 


10 


13 


15 


490 


25 


15 


15 






17 


10 


8.9 


9 


10 


13 


943 


413 


25 


15 


14 






16 


9.9 


8.8 


10 


10 


13 


2410 


348 


25 


15 


14 






16 


9.9 


8.8 


11 


9.9 


12 


2000 


304 


25 


16 


13 






16 


10 


8.8 


12 


10 


12 


1920 


272 


25 


16 


13 






15 


10 


8.9 


13 


10 


12 


1570 


229 


25 


16 


13 






15 


9.9 


8.8 


14 


10 


12 


992 


215 


25 


16 


13 


12 




15 


9.9 


9.0 


15 


10 


12 


642 


207 


25 


16 


13 


12 




14 


9.8 


13 


16 


10 


13 


457 


175 


25 


16 


13 


12 




14 


9.6 


11 


17 


10 


161 


360 


114 


26 


16 


13 


12 




14 


9.5 


9.8 


18 


13 


491 


296 


56 


26 


16 


13 


12 




14 


9.6 


9.5 


19 


15 


242 


252 


56 


26 


16 


13 


12 




14 


9.8 


9.3 


20 


12 


183 


221 


34 


26 


16 


12 


12 




13 


15 


9.0 


21 


12 


15 


223 


23 


26 


16 


12 


12 




13 


15 


8.9 


22 


11 


15 


198 


19 


26 


16 


13 






13 


11 


8.8 


23 


12 


15 


178 


164 


26 


16 


13 






12 


11 


8.8 


24 


15 


15 


91 


289 


26 


16 


13 






12 


10 


8.6 


25 


22 


15 


15 


1240 


21 


16 


13 






12 


10 


8.5 


26 


16 


15 


302 


2630 


16 


16 


12 






12 


10 


8.5 


27 


13 


15 


1250 


1260 


16 


16 


12 






12 


9.9 


8.5 


28 


13 


15 


1410 


714 


16 


16 


14 






12 


9.8 


8.4 


29 


24 


15 


2100 


624 





16 


12 






12 


9.7 


8.2 


30 


29 


15 


4960 


436 





16 


11 






12 


9.6 


8.2 


31 


20 





7710 


225 





15 










11 


9.5 





TOTAL 


400.9 


1438 


31564 


35947 


683 


487 


402 


378 


346 


407 


322.4 


274.3 


MEAN 


12.9 


47.9 


1018 


1160 


24.4 


15.7 


13.4 


12.2 


11.5 


13.1 


10.4 


9.14 


MAX 


29 


491 


7710 


12100 


27 


16 


15 


14 


14 


17 


15 


13 


MIN 


9.9 


12 


15 


19 


16 


15 


11 


11 


11 


11 


9.5 


8.2 


AC -FT 


795 


2850 


62610 


71300 


1350 


966 


797 


750 


686 


807 


639 


544 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1963 - 1997, BY WATER YEAR (WY) 



MEAN 25.6 56.4 


159 


257 




198 


216 


184 




197 


48.1 


11.8 




11.0 




10.2 


MAX 437 545 


1303 


1334 




1415 


901 


753 




795 


481 


17.3 




19.3 




15.3 


(WY) 1963 1974 


1965 


1970 




1986 


1983 


1982 




1983 


1983 


1969 




1965 




1983 


MIN 5.85 7.51 


5.80 


9.04 




8.49 


6.61 


6.12 




6.15 


6.95 


5.17 




3.82 




6.13 


(WY) 1971 1977 


1977 


1975 




1973 


1968 


1968 




1968 


1973 


1977 




1977 




1987 


SUMMARY STATISTICS 


FOR 


1996 CALENDAR YEAR 




FOR 1997 


WATER YEAR 




WATER 


YEARS 1963 


1 - 


1997 


ANNUAL TOTAL 




66710. 


9 






72649 


.6 
















ANNUAL MEAN 




182 








199 








114 










HIGHEST ANNUAL MEAN 




















352 








1982 


LOWEST ANNUAL MEAN 




















10. 


4 






1976 


HIGHEST DAILY MEAN 




7710 




Dec 31 




12100 




Jan 1 




12100 




Jan 


1 


1997 


LOWEST DAILY MEAN 




9. 


9 


Oct 11 




8. 


2 


Sep 29 






86 


Feb 


18 


1975 


ANNUAL SEVEN-DAY MINIMUM 




10 




Oct 5 




8. 


4 


Sep 24 






95 


Feb 


21 


1975 


INSTANTANEOUS PEAK FLOW 












17300 




Jan 1 




17300 




Jan 


1 


1997 


INSTANTANEOUS PEAK STAGE 












17. 


20 


Jan 1 




17. 


20 


Jan 


1 


1997 


ANNUAL RUNOFF (AC-FT) 




132300 








144100 








82840 










10 PERCENT EXCEEDS 




453 








279 








318 










50 PERCENT EXCEEDS 




13 








14 








11 










90 PERCENT EXCEEDS 




11 








9. 


,8 






e. 


,1 









SACRAMENTO RIVER BASIN 239 

1 1413320 DEADWOOD CREEK NEAR STRAWBERRY VALLEY, CA 

LOCATION.-Lat 39°33'00". long 12r05'36", in SW 1/4 SW 1/4 sec.33, T.20 N.. R.8 E., Yuba County. Hydrologic Unit 18020125, Plumas 

National Forest, on right bank 250 ft upstream of confluence with Owl Gulch, and 1 .3 mi southeast of Strawberry Valley. 
DRAINAGE AREA.--3.16 mi^. 
PERIOD OF RECORD.-October 1994 to current year. 
GAGE.--Water-stage recorder and 120° V-notch weir. Elevation of gage is 3,275 ft above sea level, from topographic map. 

REMARKS.-Water from creek is diverted at gage to Deadwood Creek Powerplant (station 1 1413326) See schematic diagram of Yuba River 
Basin. 

COOPERATION. -Records provided by Yuba County Water Agency, under general supervision of the U.S. Geological Survey, in connection with 
a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD.-Maximum daily discharge, 400 ft^/s, Jan. 1, 1997; minimum daily, 1.7 ft^/s, several days in February 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



DAY 



OCT 



JAN 



JUN 



Jta 



AUG 



SEP 



1 


4.6 


4.9 


2.8 


400 




17 


1.7 


2.8 




2.7 


2.8 


2.9 




4.4 


3.8 


2 


4.6 


4.7 


2.8 


240 




14 


1.9 


2.8 




2.7 


2.7 


2.9 




4.4 


3.8 


3 


4.6 


4.7 


2.8 


83 




12 


1.7 


2.8 




2.7 


2.7 


2.9 




4.4 


3.8 


4 


4.6 


4.6 


2.8 


47 




11 


2.8 


2.8 




2.7 


2.8 


2.9 




4.3 


3.7 


5 


4.6 


4.6 


5.3 


30 




9.4 


4.0 


2.8 




2.7 


2.8 


2.9 




4.3 


3.7 


6 


4.4 


4.4 


2.9 


23 




8.1 


4.0 


2.8 




2.7 


2.8 


2.9 




4.3 


3.6 


7 


4.4 


4.4 


2.8 


19 




6.6 


2.9 


2.8 




2.7 


2.8 


2.9 




4.1 


3.6 


8 


4.3 


4.4 


2.8 


14 




5.6 


2.9 


2.8 




2.7 


2.8 


2.9 




4.1 


3.6 


9 


4.3 


4.4 


2.9 


11 




4.7 


2.9 


2.8 




2.7 


2.8 


2.9 




4.1 


3.6 


10 


4.3 


4.3 


37 


9.2 




4.0 


2.9 


2.8 




2.7 


2.8 


2.9 




4.1 


3.5 


11 


4.3 


4.3 


25 


6.7 




3.5 


2.9 


2.8 




2.7 


2.8 


2.9 




4.1 


3.4 


12 


4.3 


4.3 


18 


5.1 




3.0 


2.9 


2.8 




2.7 


2.8 


2.9 




4.1 


3.4 


13 


4.3 


4.3 


11 


4.0 




2.5 


2.9 


2.8 




2.7 


2.8 


5.5 




4.0 


3.4 


14 


4.3 


4.3 


3.1 


3.2 




2.3 


2.8 


2.8 




2.7 


2.8 


5.4 




4.0 


3.5 


15 


4.3 


4.3 


2.8 


3.0 




2.2 


2.8 


2.7 




2.7 


2.8 


5.4 




4.0 


4.0 


16 


4.3 


4.3 


2.8 


2.9 




2.1 


2.8 


2.7 




2.7 


2.8 


5.1 




3.9 


3.7 


17 


4.3 


14 


2.8 


2.8 




2.1 


2.9 


2.8 




2.7 


2.9 


5.1 




3.9 


3.6 


18 


4.8 


17 


2.7 


2.5 




2.0 


2.9 


2.7 




2.7 


2.9 


5.1 




3.9 


3.5 


19 


4.6 


9.1 


2.7 


2.3 




2.0 


2.9 


2.8 




2.7 


2.9 


5.0 




4.0 


3.4 


20 


4.6 


2.8 


2.7 


2.4 




1.9 


2.8 


2.8 




2.7 


2.9 


5.0 




5.1 


3.4 


21 


4.4 


2.8 


2.8 


2.6 




1.9 


2.8 


2.8 




2.7 


2.9 


5.0 




4.6 


3.3 


22 


4.3 


2.9 


2.8 


14 




1.8 


2.8 


2.8 




2.7 


2.9 


4.9 




4.3 


3.3 


23 


4.4 


2.8 


2.8 


29 




1.8 


2.8 


2.8 




2.8 


2.9 


4.8 




4.1 


3.3 


24 


5.0 


2.8 


2.8 


20 




1.7 


2.8 


2.8 




2.8 


2.9 


4.9 




4.1 


3.2 


25 


5.1 


2.8 


2.8 


79 




1.7 


2.8 


2.8 




2.8 


2.9 


4.8 




4.0 


3.2 


26 


4.7 


2.8 


2.8 


97 




1.7 


14 


2.7 




2.8 


2.9 


4.8 




4.0 


3.2 


27 


4.6 


2.7 


36 


54 




1.7 


14 


2.7 




2.8 


2.9 


4.7 




3.9 


3.2 


28 


4.4 


2.8 


41 


37 




1.7 


2.8 


2.7 




2.8 


2.9 


4.7 




3.9 


3.2 


29 


9.3 


2.7 


32 


27 







2.8 


2.7 




2.8 


2.9 


4.7 




3.9 


3.2 


30 


6.3 


2.7 


94 


23 







2.8 


. 2.7 




2.8 


2.9 


4.6 




3.8 


3.2 


31 


5.3 





190 


20 




— - 


2.8 







2.8 





4.6 




3.8 





TOTAL 


146.6 


141.9 


548.3 


1313.7 




130.0 


109.5 


83.2 




84.6 


85.2 


128.9 




127.9 


104.3 


MEAN 


4.73 


4.73 


17.7 


42.4 




4.64 


3.53 


2.77 




2.73 


2.84 


4.16 




4.13 


3.48 


MAX 


9.3 


17 


190 


400 




17 


14 


2.8 




2.8 


2.9 


5.5 




5.1 


4.0 


MIN 


4.3 


2.7 


2.7 


2.3 




1.7 


1.7 


2.7 




2.7 


2.7 


2.9 




3.8 


3.2 


AC -FT 


291 


281 


1090 


2610 




258 


217 


165 




168 


169 


256 




254 


207 


a 





173 


1630 


2360 




2000 


1350 


861 




555 


317 


57 










STATISTICS OF 


MONTHLY MEAN DATA 


FOR WATER YEARS 1995 


- 1997 


, BY WATER 


YEAR (WY) 












MEAN 


3.76 


3.92 


8.71 


22.2 




7.73 


10.5 


5.73 




5.55 


3.04 


3.40 




3.41 


3.73 


MAX 


4.73 


4.73 


17.7 


42.4 




13.0 


22.8 


10.7 




10.7 


3.44 


4.16 




4.13 


4.35 


(WY) 


1997 


1997 


1997 


1997 




1996 


1995 


1995 




1995 


1995 


1997 




1997 


1996 


MIN 


2.04 


3.09 


3.61 


4.32 




4.64 


3.53 


2.77 




2.73 


2.84 


2.81 




2.91 


3.37 


(WY) 


1995 


1995 


1995 


1996 




1997 


1997 


1997 




1997 


1997 


1996 




1995 


1995 


StMMARY STATISTICS 


FOR 


1996 CALENDAR YEAR 




FOR 1997 


WATER YEAR 




WATER 


YEARS 1995 


- 1997 


ANNUAL 


TOTAL 






2123. 


1 






3004. 


1 














ANNUAL 


MEAN 






5. 


80 






8. 


23 






6. 


83 






HIGHEST ANNUAL MEAN 




















8. 


23 




1997 


LOWEST 


ANNUAL 


MEAN 




















4. 


63 




1996 


HIGHEST DAILY 


MEAN 




190 




Dec 31 




400 




Jan 1 




400 




Jan 


1 1997 


LOWEST 


DAILY MEAN 




2. 


5 


Jan 1 




1. 


7 


Feb 24 




1. 


7 


Feb 24 1997 


ANNUAL 


SEVEN-DAY MINIMUM 




2. 


5 


Jan 1 




1. 


7 


Feb 23 




1. 


7 


Feb 23 1997 


ANNUAL 


RUNOFF 


(AC-FT) 




4210 








5960 








4950 








TOTAL DIVERSION (AC-FT) a 




12640 








9290 








10830 








10 PERCENT EXCEEDS 




7. 


1 






10 








11 








50 PERCENT EXCEEDS 




2. 


9 






2. 


9 






2. 


9 






90 PERCENT EXCEEDS 




2. 


7 






2. 


7 






2. 


7 







a Diversion, in acre-feet, to Deadwood Creek Powerplant, provided by Yuba County Water Agency. 



240 



SACRAMENTO RIVER BASIN 
1 1413323 OWL GULCH NEAR STRAWBERRY VALLEY. CA 



LOCATION.--Ut 39°32'44 •, long I2r05'39 '■, in SW 1/4 SW 1/4 sec.33, T.20 N., R.8 E., Yuba County, Hydrologic Unit 18020125, Plumas 
National Forest, on left bank 250 ft upstream from Deadwood Creek, and 1.3 mi southeast of Strawberry Valley. 

DRAINAGE AREA.--2.07 mil 

PERIOD OF RECORD.-October 1994 to current year. 

GAGE. -Water-stage recorder and 120° V-notch weir Elevation of gage is 3,050 ft above sea level, from topographic map. 

REMARKS. -Water from creek is diverted at gage to Deadwood Creek Powerplant (station 1 1413326). See schematic diagram of Yuba River 
Basin. 

COOPERATION. -Records provided by Yuba County Water Agency, under general supervision of the U.S. Geological Surrey, in connection with 

a Federal Energy Regulatory Commission project. 
EXTREMES FOR PERIOD OF RECORD -Maximum daily discharge. 346 ft^/s, Jan. I, 1997; minimum daily. 0.58 ft^/s, Sept. 17-22. 1997. 

DISCHARGE, CUBIC FEET PER SECOND. WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



NOV 



DEC 



JAN 



FEB 



MAR 



APR 



MAY 



JUN 



JUL 



AUG 



SEP 



1 


1.7 


1.8 


1.9 


346 




14 


2.4 


2.4 


2.1 


2.1 


2.3 


.95 


.70 


2 


1.7 


1.8 


1.9 


206 




13 


2.6 


2.1 


2.1 


2.1 


2.2 


.92 


.70 


3 


1.7 


1.7 


1.9 


72 




12 


2.4 


2.2 


2.0 


2.1 


2.3 


.90 


.70 


4 


1.7 


1.7 


2.5 


41 




11 


2.7 


2.2 


2.0 


2.1 


2.2 


.64 


.70 


5 


1.6 


1.7 


5.5 


26 




11 


2.4 


2.2 


2.0 


2.1 


2.2 


.86 


.69 


6 


1.6 


1.7 


1.8 


21 




9.8 


2.5 


2.2 


2.0 


2.3 


2.3 


.84 


.69 


7 


1.6 


1.7 


1.9 


22 




8.9 


2.5 


2.2 


2.0 


2.3 


2.3 


.83 


.68 


8 


1.7 


1.7 


2.0 


14 




8.0 


2.4 


2.3 


2.0 


2.3 


2.2 


.83 


.67 


9 


1.7 


1.7 


4.3 


12 




7.2 


2.4 


2.4 


2.0 


2.2 


2.1 


.81 


.67 


10 


4.4 


1.7 


15 


11 




6.0 


2.4 


2.2 


2.0 


2.2 


2.2 


.80 


.66 


11 


2.4 


1.7 


13 


8. 


,7 


4.6 


2.4 


2.2 


2.1 


2.2 


2.1 


.80 


.65 


12 


1.8 


1.6 


12 


7. 


.2 


3.7 


2.4 


2.2 


2.1 


2.2 


2.2 


.78 


.64 


13 


1.7 


1.6 


11 


6. 


.6 


3.4 


4.4 


2.2 


2.0 


2.2 


2.3 


.76 


.63 


14 


1.7 


1.6 


3.0 


8. 


.6 


3.2 


2.4 


2.2 


2.1 


2.2 


2.3 


.76 


.61 


15 


1.6 


1.6 


2.3 


5. 


.4 


3.2 


2.3 


2.1 


2.0 


2.2 


2.2 


.76 


.61 


16 


1.6 


1.6 


1.8 


9. 


.8 


3.2 


2.4 


2.0 


2.0 


2.2 


2.3 


.75 


.60 


17 


1.8 


5.0 


1.7 


8. 


.0 


3.2 


2.4 


2.0 


2.0 


2.3 


2.2 


.74 


.58 


18 


1.7 


7.0 


1.7 


5. 


.4 


3.2 


2.4 


2.0 


2.0 


2.3 


2.2 


.73 


.58 


19 


1.7 


3.4 


1.7 


5, 


.4 


3.2 


2.3 


2.1 


2.0 


2.3 


2.2 


.73 


.58 


20 


1.7 


1.8 


1.7 


5, 


.4 


3.2 


2.4 


2.0 


2.0 


2.3 


2.1 


.73 


.58 


21 


1.7 


1.8 


1.8 


7, 


.0 


3.2 


2.3 


1.8 


2.0 


2.3 


2.0 


.73 


.58 


22 


1.9 


1.8 


1.7 


23 




3.2 


2.3 


1.9 


2.0 


2.3 


2.0 


.73 


.58 


23 


1.6 


1.8 


1.7 


19 




3.2 


2.3 


2.0 


2.0 


2.3 


2.0 


.73 


.92 


24 


1.8 


1.8 


1.7 


15 




3.2 


2.3 


2.0 


2.0 


2.3 


2.0 


.73 


1.3 


25 


1.8 


1.8 


1.7 


32 




3.2 


2.4 


2.2 


2.0 


2.3 


1.8 


.73 


1.3 


26 


1.7 


1.9 


1.6 


36 




3.1 


2.3 


2.2 


2.0 


2.3 


1.6 


.73 


1.3 


27 


1.7 


1.9 


32 


35 




3.1 


2.3 


2.1 


2.0 


2.3 


1.6 


.73 


1.2 


28 


1.7 


2.0 


35 


30 




2.5 


2.3 


2.1 


2.0 


2.3 


1.9 


.72 


1.2 


29 


3.2 


1.9 


28 


23 




. 


2.4 


2.1 


2.0 


2.3 


1.5 


.71 


1.2 


30 


2.3 


1.8 


82 


18 







2.4 


2.1 


2.0 


2.3 


1.5 


.70 


1.2 


31 


1.9 





164 


15 







2.4 





2.0 





1.5 


.70 





TOTAL 


58.4 


62.6 


439.8 


1094. 


5 


159.7 


76.2 


63.9 


62.5 


67.2 


63.8 


23.86 


23.70 


MEAN 


1.88 


2.09 


14.2 


35. 


3 


5.70 


2.46 


2.13 


2.02 


2.24 


2.06 


.77 


.79 


MAX 


4 .4 


7.0 


164 


346 


14 


4.4 


2.4 


2.1 


2.3 


2.3 


.95 


1.3 


MIN 


1.6 


1.6 


1.6 


5. 


4 


2.5 


2.3 


1.8 


2.0 


2.1 


1.5 


.64 


.58 


AC -FT 


116 


124 


872 


2170 


317 


151 


127 


124 


133 


127 


47 


47 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1995 - 1997, BY WATER YEAR (WY) 



MEAN 


1.53 


1.76 


6.15 


19.0 


7.57 


8.20 


4.47 


5.18 


2.04 


1.92 


1.45 


1.43 


MAX 


1.88 


2.09 


14.2 


35.3 


12.8 


16.3 


8.74 


10.6 


2.24 


2.06 


1.82 


1.76 


(WY) 


1997 


1997 


1997 


1997 


1996 


1995 


1995 


1995 


1997 


1997 


1995 


1995 


MIN 


.99 


1.56 


2.11 


4.09 


3.97 


2.46 


2.13 


2.02 


1.79 


1.74 


.77 


.79 


(WY) 


1995 


1995 


1996 


1996 


1995 


1997 


1997 


1997 


1996 


1996 


1997 


1997 



SUMMARY STATISTICS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1995 - 1997 



ANNUAL TOTAL 


1622.2 






2196.16 










ANNUAL MEAN 


4.43 






6.02 




5.07 






HIGHEST ANNUAL MEAN 












6.02 




1997 


LOWEST ANNUAL MEAN 












3.36 




1996 


HIGHEST DAILY MEAN 


164 


Dec 


31 


346 


Jan 1 


346 


Jan 1 


1997 


LOWEST DAILY MEAN 


1.3 


May 


20 


.58 


Sep 17 


.58 


Sep 17 


1997 


ANNUAL SEVEN-DAY MINIMUM 


1.6 


Aug 


27 


.58 


Sep 16 


.58 


Sep 16 


1997 


ANNUAL RtnjOFF (AC-FT) 


3220 






4360 




3670 






10 PERCENT EXCEEDS 


8.2 






9.3 




11 






50 PERCENT EXCEEDS 


1.8 






2.1 




2.0 






90 PERCENT EXCEEDS 


1.7 






.73 




1.4 







SACRAMENTO RIVER BASIN 
1 1413510 NEW COLGATE POWERPLANT NEAR FRENCH CORRAL, CA 



241 



LOCATION.-Lat 39°19'51". long 121°1 r23", in NE 1/4 SE 1/4 sec.l6, T.17 N., R.7 E.. Yuba County, Hydrologic Unit 18020125, at powerplant 
on right bank of Yuba River, 0.3 mi upstream from Dobbins Creek, and 2.3 mi northwest of French Corral. 

PERIOD OF RECORD.-October 1966 to current year. Prior to October 1969, published as "Colgate Powerplant." 

GAGE. --Recorded output from powerplant turbines. 

REMARKS. -Water is diverted from North Yuba River at New Bullards Bar Reservoir (station 1 1413515). Colgate Powerplant was lebuilt during 
the 1970 water year with an increased capacity. Prior to Oct. 31, 1973, Browns Valley Ditch diverted up to 10 ft^/s at times from the head of 
the penstock for use in irrigation. See schematic diagram of Yuba River basin. 

COOPERATION. -Records provided by Yuba County Water Agency, under general supervision of the U.S. Geological Survey, in connection with 
a Federal Energy Regulatory Commission project. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 

DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 



1 


2070 


1560 


1090 






00 


3480 


2080 


676 




1200 


345 




1070 


2510 


1460 


2 


1860 


1150 


754 






00 


3520 


1950 


1070 




1190 


849 




1280 


2770 


1400 


3 


2180 


1550 


1260 






00 


3530 


2830 


1050 




1080 


879 




1220 


1410 


1220 


4 


1710 


868 


1310 






00 


3520 


3190 


1020 




1130 


387 




711 


2480 


544 


5 


1750 


1520 


101 






,00 


3520 


2450 


15 




1410 




00 


986 


2510 


423 


6 


1400 


1250 


85 




1510 




3520 


2160 


411 




1330 


101 




524 


2410 


461 


7 


1310 


1170 




00 


3150 




3520 


2810 


525 




1600 


563 




1790 


2970 


237 


8 


1430 


1420 


1550 




3520 




3520 


2930 


518 




489 


713 




1130 


2680 


299 


9 


1540 


1030 


2420 




3510 




3520 


2350 


719 




1110 


708 




1670 


2850 


516 


10 


1630 


1160 


300 




3520 




3520 


3040 


380 




1020 


726 




1930 


2810 


373 


11 


1360 


1320 


194 




3510 




3500 


2880 


569 




161 


863 




2160 


2980 


633 


12 


1220 


1400 


198 




3510 




3510 


2540 


557 




157 


931 




2180 


2640 


489 


13 


1220 


1160 


200 




3510 




3510 


2410 


456 




95 


872 




2170 


2390 


640 


14 


1960 


1390 


203 




3500 




2900 


2390 


629 




311 


764 




2190 


2280 


489 


15 


1350 


1250 


205 




3480 




3130 


2180 


363 




350 


686 




2320 


2020 


789 


16 


1340 


1020 


1050 




3500 




3230 


1650 


471 




672 


772 




2530 


2350 


786 


17 


1490 


797 


2660 




3510 




2960 


1890 


297 




395 


1030 




1980 


2130 


742 


18 


1400 


77 


3270 




3510 




3170 


1620 


198 




98 


895 




2370 


2590 


592 


19 


1100 


85 


3390 




3510 




3190 


2080 




00 


134 


1060 




2200 


2130 


752 


20 


1470 


515 


3480 




3510 




3030 


1160 




00 


130 


835 




1870 


2580 


16 


21 


1480 


937 


2300 




3500 




3430 


2060 


1230 




846 


980 




2490 


2200 


394 


22 


1320 


940 


1350 




3500 




3230 


1670 


1160 




419 


753 




2440 


2430 


626 


23 


1380 


15 


2270 




3510 




2620 


1350 


1130 




673 


1100 




2030 


2510 


1380 


24 


1520 


5.0 


2910 




3510 




3340 


1710 


1020 




321 


723 




2390 


2350 


1490 


25 


1290 


1110 


3020 




3510 




3460 


1540 


1990 




339 


1140 




2210 


2080 


559 


26 


872 


1520 


3230 




3510 




3170 


1210 


637 




839 


911 




2440 


2160 


71 


27 


1530 


1270 


3300 




3500 




3060 


1450 


1580 




706 


1440 




2310 


2420 


63 


28 


1440 


860 


2330 




3520 




3470 


1010 


1520 




710 


650 




2090 


2510 


91 


29 


1450 


1570 


2350 




3530 







190 


2020 




1250 


1250 




2600 


2450 


988 


30 


1200 


1170 


2090 




3530 







830 


1070 




1330 


770 




2480 


1810 


899 


31 


1180 





535 




3530 







1450 






719 






1950 


1990 





TOTAL 


45452 


31089.0 


49405. 


00 


88910, 


,00 


93080 


61060 


23281, 


,00 


22214 


23696, 


,00 


59711 


74400 


19422 


MEAN 


1466 


1036 


1594 


2868 


3324 


1970 


776 


717 


790 


1926 


2400 


647 


MAX 


2180 


1570 


3480 


3530 


3530 


3190 


2020 


1600 


1440 


2600 


2980 


1490 


MIN 


872 


5.0 




00 




00 


2620 


190 




,00 


95 




00 


524 


1410 


16 


AC -FT 


90150 


61670 


97990 


176400 


184600 


121100 


46180 


44060 


47000 


118400 


147600 


38520 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1971 - 1997, BY WATER YEAR (WY) 



MEAN 


1218 


1150 


1403 


1527 


1620 


1599 


1624 


1453 


1609 


1732 


1892 


1385 


MAX 


2497 


2433 


3262 


3496 


3449 


3519 


3508 


3565 


3629 


3057 


3130 


2995 


(WY) 


1976 


1976 


1975 


1984 


1995 


1980 


1993 


1982 


1983 


1983 


1984 


1980 


MIN 


.000 


302 


96.6 


152 


54.6 


39.3 


103 


206 


404 


386 


319 


.000 


(WY) 


1975 


1978 


1978 


1977 


1977 


1977 


1979 


1977 


1977 


1977 


1977 


1974 



SUMMARY STATISTICS 



FOR 199 6 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1971 - 1997 



ANNUAL TOTAL 


772702.00 






591720.00 














ANNUAL MEAN 


2111 






1621 






1518 








HIGHEST ANNUAL MEAN 














2686 






1983 


LOWEST ANNUAL MEAN 














316 






1977 


HIGHEST DAILY MEAN 


3610 


May 


30 


3530 


Jan 


29 


4200 


Jun 


2 


1971 


LOWEST DAILY MEAN 


.00 


Dec 


7 


.00 


Dec 


7 


.00 


Mar 


14 


1971 


ANNUAL SEVEN-DAY MINIMUM 


336 


Dec 


10 


280 


Apr 


14 


.00 


Feb 


29 


1972 


ANNUAL RUNOFF (AC-FT) 


1533000 






1174000 






1100000 








10 PERCENT EXCEEDS 


3520 






3480 






3360 








50 PERCENT EXCEEDS 


2130 






1400 






1230 








90 PERCENT EXCEEDS 


839 






296 






145 









242 



SACRAMENTO RIVER BASIN 
1 1413515 NEW BULLARDS BAR RESERVOIR NEAR NORTH SAN KJAN. CA 



LOCATION.--Ut 39°23'34". long 12I°08'25', in SE 1/4 NW 1/4 sec.25, T.I8 N., R.7 E., Yuba County, Hydrologic Unit 18020125, Plumas 
National Forest, in center of dam on North Yuba River, 2.2 mi upstream from Middle Yuba River, and 2.4 mi northwest of North San Juan. 

DRAINAGE AREA. --489 mi^. 

PERIOD OF RECORD.-January 1969 to current year. 

GAGE. -Water-stage recorder. Datum of gage is sea level (levels by Yuba County Water Agency). 

REMARKS— Reservoir is formed by concrete-arch dam with a concrete-sidehill spillway. Spill controlled by three 30-ft by 53-ft radial gates. 
Storage began in January 1969. Usable capacity, 727,380 acre-ft between elevations 1,732.0 ft. minimum power pool, and 1,955.0 ft, normal 
gross pool. Dead storage, 233,920 acre-ft. Total capacity at normal gross pool, 961,300 acre-ft, elevation. 1,955.0 ft. Water is released to New 
Colgate Powerplant (station 1 14 1 35 10) through a tunnel at the dam Water is diverted into the reservoir from Middle Yuba River via Lohman 
Ridge Tunnel to Oregon Creek then via Camptonville Tunnel (stations 1 1408870 and 1 1409350). Records, including extremes, represent total 
contents at 2400 hours. See schematic diagram of Yuba River basin. 

COOPERATION— Records provided by Yuba County Water Agency, under general supervision of the U.S. Geological Survey, in connection with 
a Federal Energy Regulatory Commission project. Contents not rounded to U.S. Geological Survey standards. 

EXTREMES FOR PERIOD OF RECORD. -Maximum contents, 972.224 acre-ft, June 27, 1995, elevation, 1,957.27 ft; minimum since reservoir 
first filled, 178,230 acre-ft, Dec. 29. 1980. elevation. 1.700.00 ft. 



EXTREMES FOR CURRENT YEAR, 
elevation. 1.863.02 ft. 



-Maximum contents, 958,286 acre-ft. Jan. 2. elevation, 1,954.37 ft; minimum, 583,825 acre-ft, Nov. 16, 

Capacity table (elevation, in feet, and contents, in acre-feet) 
(Based on survey by Yuba County Water Agency in 1969) 



1,600 


64,900 


1,630 


90,570 


1,660 


122,993 


1,690 


162,983 


1,720 


211,768 



1,750 
1,800 
1,850 
1,900 
1,960 



270.110 
389.977 
539.748 
721.130 
985.471 



DAY 

1 
2 
3 
4 
5 

6 

7 

8 

9 

10 



OCT 

680678 
677664 
674012 
671207 
668370 

666182 
664111 
661858 
659272 
656655 



RESERVOIR STORAGE (ACRE-FEET), WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 
DAILY OBSERVATION AT 2400 HOURS 

NOV DEC JAN FEB MAR APR MAY JtJN JUL 



611738 
610024 
607603 
606537 
604196 

602319 
600587 
598436 
596922 
595166 



607710 
608208 
607319 
607319 
627035 

636875 
642826 
644447 
650366 
679457 



934670 
958286 
910398 
868012 
835985 

813075 
800590 
793275 
787387 
782362 



788814 
786464 
783449 
780065 
776193 

771463 
767411 
763990 
760333 
757506 



713542 
713818 
711771 
708669 
706867 

705810 
703309 
700465 
698948 
696075 



717962 
719347 
720614 
721804 
724703 

726773 
728448 
730244 
731684 
733526 



803137 
804795 
806540 
808330 
809654 

811107 
812005 
815218 
817451 
819990 



865466 
865689 
865823 
867922 
870474 

872222 
873030 
873255 
873434 
873794 



860165 
858665 
857011 
856568 
855550 

855328 
852629 
851038 
848436 
845400 



AUG 

762222 
757424 
755093 
750772 
746385 

742258 
737059 
732365 
727331 
722439 



SEP 

636070 
633841 
631870 
631324 
631032 

630486 
630377 
630086 
629431 
629032 



11 
12 
13 
14 
15 



654492 
652557 
650737 
647439 
645296 



593202 
591032 
589286 
587091 
585144 



708277 
741814 
764442 
778607 
788520 



776900 
771421 
766709 
764031 
762633 



755012 
752319 
749552 
747764 
745454 



693558 
691703 
689890 
688041 
686849 



734970 
736456 
738226 
739636 
741733 



824175 
828200 
832326 
835723 
839087 



873614 
873345 
873255 
873075 
873255 



842020 
838475 
834851 
831326 
827507 



717211 
712597 
708473 
704598 
701204 



628051 
627543 
626637 
626200 
625259 



16 643157 

17 641206 

18 638745 

19 637169 

20 634826 



583825 
585700 
594745 
600058 
604798 



794498 
795849 
795047 
793317 
791168 



760702 
758488 
755870 
753012 
750894 



742864 
741289 
739112 
737260 
735572 



687618 
688272 
689120 
689081 
690815 



743916 
746588 
750487 
758447 
765225 



841626 
844478 
847732 
850686 
853557 



872985 
872267 
871684 
870832 
870295 



823267 
820033 
816034 
812390 
809312 



697084 
693403 
688888 
685198 
681481 



624173 
623162 
622331 
621356 
621537 



21 632454 605543 793486 749145 732966 691047 771587 854796 869578 805178 677855 621248 

22 630413 607746 796991 754766 730604 692321 777066 856391 869086 801014 673671 620348 

23 628268 611309 798387 756278 729086 694525 783365 858166 868012 797583 669352 618080 

24 625983 613525 797329 752197 726215 696114 787806 860431 867609 793612 665304 615567 

25 624354 613310 795343 766833 723035 698015 789402 862256 866403 789906 661407 614778 



26 
27 
28 
29 
30 
31 



623198 
620815 
618583 
617110 
615710 
614098 



611916 
610738 
610346 
608458 
607213 



800293 
807094 
792221 
785500 
803817 
838825 



795680 
803094 
800335 
795089 
792474 
790412 



720337 
717883 
714488 



700698 
703309 
706631 
710946 
713897 
715434 



793275 
795638 
798006 
798895 
801269 



862879 
863592 
864397 
864082 
863681 
864127 



865600 
863770 
863325 
361988 
361143 



785793 
781902 
778440 
773950 
769765 
766503 



657701 
653487 
649142 
644927 
641978 
638488 



614993 
615245 
615388 
613919 
612631 



MAX 680678 613525 838825 

MIN 614098 583825 607319 

a 1871.61 1869.68 1928.25 

b -70102 -6885 +231612 



CAL YR 1996 b 
WTR YR 1997 b 



■156119 
-71569 



958286 788814 715434 

749145 714488 686849 

1916.96 1898.32 1898.56 

-48413 -75924 +946 



801269 864397 873794 860165 

717962 803137 861143 766503 

1919.53 1933.98 1933.31 1911.22 

♦85835 +62858 -2984 -94640 



762222 636070 

638488 612631 

1878.34 1871.20 

-128015 -25857 



a Elevation, in feet, at end of month, 
b Change in contents, in acre-feet. 



SACRAMENTO RIVER BASIN 
1 1413520 NORTH YUBA RIVER BELOW NEW BULLARDS BAR DAM, NEAR NORTH SAN JUAN, CA 



243 



LOCATION.-Lat 39°23'26", long 12r08'36", in SE 1/4 NW 1/4 sec.25, T.18 N., R.7 E., Yuba County, Hydrologic Unit 18020125, Plumas 
National Forest, on right bank at old Colgate Dam, 0.2 mi downstream from New BuUards Bar Dam, and 2.5 mi northwest of North San Juan. 

DRAINAGE AREA.--490 mil 

PERIOD OF RECORD.-August 1966 to current year. 

GAGE.-Water-stage recorder, and sharp-crested low-water control since Oct. 1, 1986. Elevation of gage is 1,350 ft above sea level, from 
topographic map. Auxiliary water-stage recorder for high flow 0.9 mi downstream at different datum. 

REMARKS. -Records good. Flow regulated by New BuUards Bar Reservoir (station 1 1413515) since 1969. Prior to 1969, flow regulated by 
BuUards Bar Reservoir (usable capacity, 3 1 ,500 acre-ft). New Colgate Powerplant (station 1 14 1 35 10) diverts at New BuUards Bar Dam 0.2 mi 
upstream. Water is diverted to Feather River basin through Slate Creek Tunnel (station 1 1413250). CamptonvUle Tunnel (station 1 1409350) 
diverts water from Middle Yuba River to New BuUards Bar Reservoir. Records include flow over New BuUards Bar Reservoir spUlway. See 
schematic diagram of Yuba River basin. 

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 56,200 ft'/s, Jan. 22, 1970, gage height, 35.29 ft, at auxiUary gage, from rating 
curve extended above 40,000 ft'/s on basis of computation of flow over old Colgate Dam; minimum daUy, 0.42 ft'/s, Nov. 5, 1966. 

EXTREMES OUTSIDE PERIOD OF RECORD.-Flood of Dec. 22, 1964, reached a stage of 49.8 ft, from floodmarks, discharge, 91,600 ft^/s, at 
auxiUary gage, from computation of flow over old Colgate Dam. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



NOV 



DEC 



JAN 



FEB 



MAR 



APR 



MAY 



JUN 



JUL 



1 


5.8 


6.4 


6.7 


36100 


1830 


6.4 


6.4 


6.8 


6.8 


6.6 


6.1 


6.4 


2 


6.0 


6.4 


6.2 


45800 


1800 


6.8 


6.4 


6.8 


6.8 


6.6 


6.2 


6.4 


3 


6.2 


6.4 


6.2 


43400 


1760 


6.4 


6.4 


6.9 


6.9 


6.6 


6.2 


6.3 


4 


6.2 


6.4 


7.1 


32500 


1710 


6.4 


6.4 


6.9 


7.0 


6.6 


6.2 


6.2 


5 


6.2 


6.7 


9.5 


25400 


1650 


6.4 


6.4 


6.9 


6.8 


6.6 


6.2 


6.2 


6 


6.2 


7.3 


6.5 


18300 


1840 


6.4 


6.4 


6.7 


6.8 


6.6 


6.2 


6.2 


7 


6.2 


6.4 


6.4 


9370 


1370 


6.7 


6.4 


6.8 


6.8 


6.6 


6.2 


6.2 


8 


6.2 


6.4 


6.2 


5120 


892 


6.4 


6.4 


6.9 


6.8 


6.6 


6.2 


6.2 


9 


7.1 


6.4 


6.6 


3760 


826 


6.4 


6.4 


6.9 


6.8 


6.6 


6.2 


6.2 


10 


6.4 


6.4 


8.7 


2980 


343 


6.4 


6.6 


6.9 


6.8 


6.6 


6.2 


6.2 


11 


6.4 


6.4 


7.8 


2820 


11 


6.4 


6.7 


6.9 


6.8 


6.6 


6.2 


6.2 


12 


6.4 


6.4 


7.8 


2640 


9.9 


6.4 


6.7 


6.9 


7.0 


6.6 


6.2 


6.2 


13 


6.4 


6.4 


7.3 


1800 


9.5 


6.4 


6.8 


6.9 


9.1 


6.6 


6.2 


6.2 


14 


6.4 


6.4 


6.6 


536 


9.4 


6.4 


6.8 


6.9 


6.8 


6.6 


6.2 


6.2 


15 


6.4 


6.4 


6.6 


12 


9.5 


6.4 


6.8 


7.0 


6.8 


6.6 


6.2 


6.2 


16 


6.4 


6.4 


6.5 


10 


9.2 


6.5 


6.8 


7.1 


6.8 


6.6 


6.2 


6.2 


17 


6.4 


7.9 


6.4 


10 


9.3 


6.5 


6.7 


7.1 


6.8 


6.6 


6.2 


6.2 


18 


6.5 


8.0 


6.4 


9.9 


6.4 


6.4 


6.8 


7.1 


6.8 


6.6 


6.2 


6.2 


19 


6.4 


7.4 


6.3 


9.7 


6.4 


6.4 


6.8 


7.1 


6.8 


6.6 


6.2 


6.2 


20 


6.4 


6.8 


6.3 


11 


6.4 


6.4 


6.6 


6.8 


6.8 


6.6 


6.3 


6.2 


21 


6.4 


6.3 


8.3 


11 


6.4 


6.4 


6.7 


6.5 


6.8 


6.6 


6.2 


6.2 


22 


6.4 


7.0 


7.5 


28 


6.4 


6.4 


6.8 


6.7 


6.8 


6.6 


6.2 


6.2 


23 


6.4 


6.7 


6.8 


1690 


6.4 


6.4 


6.8 


7.0 


6.7 


6.6 


6.2 


6.2 


24 


6.4 


6.2 


6.6 


3080 


6.4 


6.4 


6.8 


6.9 


6.6 


6.5 


6.2 


6.2 


25 


6.4 


6.0 


6.4 


2190 


6.4 


6.4 


7.0 


6.8 


6.6 


6.4 


6.2 


6.2 


26 


6.4 


5.8 


8.6 


577 


6.4 


6.4 


6.8 


6.8 


6.6 


6.4 


6.2 


6.2 


27 


6.4 


6.2 


7700 


3850 


6.4 


6.4 


6.8 


6.8 


6.6 


6.4 


6.2 


6.2 


28 


6.4 


6.2 


18100 


6160 


6.4 


6.4 


6.8 


6.8 


6.6 


6.4 


6.3 


7.5 


29 


6.6 


6.2 


16100 


6000 





6.4 


6.8 


6.8 


6.6 


6.4 


6.4 


8.6 


30 


6.5 


6.2 


17100 


3600 





6.4 


6.8 


6.8 


6.6 


6.2 


6.4 


7.9 


31 


6.4 





28100 


2530 





6.4 





6.8 





6.0 


6.4 





TOTAL 


197.3 


196.5 


87282.3 


260304.6 


14159.2 


199.3 


199.8 


213.0 


205.3 


202.5 


192.9 


191.9 


MEAN 


6.36 


6.55 


2816 


8397 


506 


6.43 


6.66 


6.87 


6.84 


6.53 


6.22 


6.40 


MAX 


7,1 


8.0 


28100 


45800 


1840 


6.8 


7.0 


7.1 


9.1 


6.6 


6.4 


8.6 


MIN 


5.8 


5.8 


6.2 


9.7 


6.4 


6.4 


6.4 


6.5 


6.6 


6.0 


6.1 


6.2 


AC -FT 


391 


390 


173100 


516300 


28080 


395 


396 


422 


407 


402 


383 


381 



244 SACRAMENTO RIVER BASIN 

1 1413520 NORTH YUBA RIVER BELOW NEW BULLARDS BAR DAM, NEAR NORTH SAN JUAN, CA— Continued 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1966 - 1997, BY WATER YEAR (WYI 



JUL 



MEAN 


19.2 


38.2 


310 


876 


925 


694 


419 


551 


241 


39.6 


7.62 


8.16 


MAX 


381 


404 


3570 


8990 


7457 


4648 


4144 


4289 


3759 


759 


25.4 


45.9 


(WY) 


1975 


1967 


1984 


1970 


1986 


1995 


1982 


1967 


1967 


1967 


1967 


1969 


MIN 


2.60 


3.41 


4.97 


4.65 


2.10 


5.32 


3.09 


4.12 


1.92 


3.48 


3.21 


2.89 


(WY) 


1971 


1971 


1978 


1981 


1971 


1976 


1970 


1970 


1970 


1977 


1977 


1966 



SUMMARY STATISTICS 

ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC-FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1966 - 1997 



268178.1 






363544.6 












733 






996 






342 
1560 
4.62 




1967 
1977 


28100 


Dec 


31 


45800 


Jan 


2 


48200 


Feb 19 


1986 


5.6 


Sep 


3 


5.8 


Oct 


1 


.42 


Nov 5 


1966 


5.6 


Sep 


3 


6.1 


Oct 


1 


.68 


Nov 1 


1966 








47200 


Jan 


2 


56200 


Jan 22 


1970 








34.55 


Jan 


2 


35.29 


Jan 22 


1970 


531900 






721100 






247500 






1780 






552 






76 






6.5 






6.6 






6.7 






6.0 






6.2 






4.7 







SACRAMENTO RIVER BASIN 245 

1 1413940 KIDD LAKE NEAR SODA SPRINGS, CA 

LOCATION.--Ut39°18'41",long 120°25'54", in SW 1/4 NW 1/4 sec.29, T.17 N., R.14E., Placer County. Hydrologic Unit 18020125, on outlet 
structure on Kidd Lake Dam and 3.0 mi west of Soda Springs. 

DRAINAGE AREA.-- 1.00 mi^. 

PERIOD OF RECORD.-July 1991 to current year. Unpublished records for water years 1966-91 available in files of the U.S. Geological Survey. 

GAGE— Staff gage, observed occasionally. Water-stage recorder not operational entire year. Datum of gage is 6,600.3 ft above sea level (levels by 
Pacific Gas & Electric Co.). Prior to July 1991, nonrecording gage at same site and datum. 

REMARKS. -Reservoir is formed on natural lake by rock-fiU dam completed in 1855. Usable capacity, 1,505 acre-ft between gage heights 0.0 ft, 
invert of outlet, and 27.3 ft, crest of spillway. Water is used for power development downstream. The recording and sensing equipment did not 
operate the entire year. Therefore, records, including extremes, represent usable contents at time of observation. 

COOPERATION— Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD.-Maximum contents observed, 1,559 acre-fl, June 6, 22, 1995, May 22, 1996, gage height, 27.9 ft; 
minimum recorded, no storage Dec. 1, 1994. 

EXTREMES FOR CURRENT YEAR. -Maximum contents observed, 1,541 acre-ft. May 26, gage height, 27.7 ft; minimum observed. 282 acre-ft, 
Oct. 28. gage height. 8.60 ft. 

Capacity table (gage height, in feet, and contents, in acre-feet) 
(Based on survey by Pacific Gas & Electric Co., dated April 1965) 
16 654 

4 117 20 918 

8 259 28 1568 

RESERVOIR STORAGE (ACRE-FEET), WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 
DAILY INSTANTANEOUS VALUES 

DAY OCT NOV DEC JAN FEB MAR APR MAY JtJN JUL AUG SEP 
3 839 

10 661 
28 282 



246 



SACRAMENTO RIVER BASIN 
1 141 3945 LOWER CASCADE LAKE NEAR SODA SPRINGS. CA 



LOCATION.--Ut 39n8'12", long 120''26'19", in SE 1/4 SE 1/4 sec.30, T.17 N., R.14E.. Placer County, Hydrologic Unit 18020125, Tahoe 
National Forest, on outlet structure on Lower Cascade Lake Dam and 3.6 mi southwest of Soda Springs. 

DRAINAGE AREA.--1. 02 mi^. 

PERIOD OF RECORD.--July 1991 to current year. Unpublished records for water years 1966-90 available in files of the U.S. Geological Survey. 

GAGE. --Water-stage recorder. Datum of gage is 6,560.4 ft above sea level (levels by Pacific Gas & Electric Co.). Prior to July 1991, nonrecording 
gage at Scime site and datum. 

REMARKS— Reservoir is formed on natural lake by rock-fill dam completed in 1860. Usable capacity, 484 acre-ft between gage heights 0.0 ft, 
invert of outlet, and 21 .5 ft, crest of spillway. Water is used for power development downstream. Records, including extremes, represent usable 
contents at 2400 hours. Missing days are due to equipment failure. 

COOPERATION.-Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD.-Maximum contents, 617 acre-ft, Apr. 29, 1995, gage height, 25.89 ft; no storage on some days in most 
years. 

EXTREMES FOR CURRENT YEAR.-Maximum contents recorded, 492 acre-ft. May 1, 10, gage height, 21.74 ft; minimum contents recorded, 
7 acre-ft, Nov. 8-16, gage height, 0.44 ft.. 

Capacity table (gage height, in feet, and contents, in acre-feet) 

(Based on survey by Pacific Gas & Electric Co., dated April 1965) 

16 318 

4 62 20 435 

8 133 22 500 

12 218 23 530 

RESERVOIR STORAGE (ACRE-FEET), WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 
DAILY OBSERVATION AT 2400 HOURS 



NOV 



DEC 



JAN 



FEB 



MAR 



APR 



MAY 



JUN 



JUL 



1 





20 


141 


2 





19 


141 


3 


90 


17 


141 


4 





16 


143 


5 


91 


14 


177 


6 





10 


179 


7 





8 


181 


8 





7 


183 


9 





7 


186 


10 


64 


7 


187 


11 


60 


7 


188 


12 


57 


7 





13 


55 


7 





14 


52 


7 





IS 


50 


7 





16 


47 


7 


--» 


17 


44 


53 





18 


48 


88 





19 


42 


87 





20 


39 


60 





21 


39 


123 




22 


38 


132 





23 


36 


135 





24 


51 


136 





25 


39 


137 





26 


32 


137 





27 


30 


137 





28 


27 


137 





29 


29 


136 





30 


25 


136 





31 


22 








MAX 





137 





MIN 





7 





a 


1.44 


8.13 




b 


-77 


+ 114 





a Gage height, in feet, at end of month, 
b Change in contents, in acre-feet. 



492 


487 


480 


477 


471 


491 


487 


489 


477 


471 


491 


489 


489 


477 


471 


491 


490 


489 


477 


464 


491 


489 


488 


477 





490 


489 


488 


477 





491 


489 


488 


476 





491 


488 


487 


476 





491 


488 


487 


476 





492 


488 


486 


475 





491 


488 


485 


475 





491 


488 


485 


474 





491 


488 


484 


474 





491 


487 


484 


474 





490 


487 


483 


474 





490 


487 


483 


474 





491 


487 


482 


474 





491 


486 


482 


474 





490 


486 


481 


473 





489 


486 


481 


475 





488 


485 


480 


475 





488 


484 


480 


474 





490 


484 


480 


474 





490 


483 


479 


474 


403 


489 


483 


479 


474 





489 


482 


478 


473 





488 


482 


478 


473 





488 


481 


478 


472 





488 


480 


477 


472 


318 


487 


480 


477 


472 





487 





476 


472 





492 


490 


489 


477 





487 


480 


476 


472 





21.60 


21.39 


21.26 


21.11 






-7 


-4 


-4 





SACRAMENTO RIVER BASIN 
1 1414090 FORDYCE LAKE NEAR CISCO, CA 



247 



LOCATION.--Ut 39°22'44", long 120''29'40", in NE 1/4 SE 1/4 sec.34, T.18 N., R.12 E., Nevada County, Hydrologic Unit 18020125, near left 
abutment of Fordyce Dam on Fordyce Creek and 5.3 mi northeast of Cisco. 

DRAINAGE AREA.--31.7 mil 

PERIOD OF RECORD. --October 1977 to current year. Periodic gage heights only for October 1965 to September 1976 and daily contents for water 
year 1977 are in the files of the U.S. Geological Survey. 

GAGE— Water-stage recorder. Datum of gage is 6,290.5 ft above sea level (levels by Pacific Gas & Electric Co.). Prior to Nov. 29, 1976, 
nonrecording gage on upstream side of dam at same datum. 

REMARKS— Jan. 2 to Feb. 5 missing due to equipment malfunction. Lake is formed by a rockfUl dam; storage began in 1926. In 1980 the capacity 
of Fordyce Lake was increased by the addition of 3 ft of flashboards. Capacity, 49,903 acre-ft between gage heights 0.85 ft, bottom of outlet 
valve, and 1 14.6 ft, top of flashboards in spillway. Released water flows down Fordyce Creek (station 1 1414100) to Lake Spaulding (station 
1 1414140) for use in a power and irrigation system. See schematic diagram of Yuba River basin. 

COOPERATION. -Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. Contents not rounded to U.S. Geological Survey standards. 

EXTREMES FOR PERIOD OF RECORD.-Maximum contents, 49,903 acre-ft, June 27, July 4, 6, 1982, June 9, 15-17, 1984, and several days in 
June 1989, gage height, 1 14.60 ft; minimum, 250 acre-ft, Oct. 31 to Nov. 7, 1979. 

EXTREMES FOR CURRENT YEAR.-Maximum contents, unknown; minimum, 1,401 acre-ft, Oct. 26, gage height, 14.06 ft. 



Capacity table (gage height, in feet, and contents, in acre-feet) 
(Based on table provided by Pacific Gas & Electric Co., dated May 1981) 

4 219 20 2,608 40 8,183 

5 278 25 3,827 50 11,797 
10 774 30 5,170 60 16,174 
15 1,570 35 6,628 70 21,196 



80 


26,770 


90 


32,820 


00 


39,342 


14.6 


49,903 



RESERVOIR STORAGE (ACRE-FEET), WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 
DAILY OBSERVATION AT 2400 HOURS 



NOV 



DEC 



JAN 



FEB 



MAR 



APR 



MAY 



JUN 



JUL 



AUG 



SEP 



1 


1693 


2129 


9260 


35439 





39139 


30915 


39839 


49754 


42102 


31229 


22823 


2 


1695 


2152 


9481 








39173 


30567 


39601 


49677 


41479 


30885 


22566 


3 


1702 


2178 


9682 








39200 


30359 


39478 


49700 


40820 


30548 


22371 


4 


1706 


2201 


9802 








38875 


30384 


39587 


49685 


40229 


30207 


22181 


5 


1721 


2225 


e9900 








38324 


30414 


40085 


49517 


39601 


29868 


22024 


6 


1718 


2244 


elOOOO 





39281 


37790 


30432 


41124 


49593 


38976 


29687 


21847 


7 


1687 


2233 


elOlOO 





39274 


37253 


30451 


42271 


49662 


38499 


29638 


21675 


8 


1697 


2214 


el0200 





39261 


36751 


30499 


43325 


49731 


38170 


29584 


21499 


9 


1697 


2201 


el0300 





39227 


36246 


30536 


44142 


49723 


37843 


29529 


21329 


10 


1628 


2190 


el0400 





39206 


35770 


30536 


44982 


49585 


37511 


29475 


21154 


11 


1586 


2184 


elOSOO 





39179 


35323 


30530 


45772 


49540 


37180 


29258 


20974 


12 


1558 


2182 


el4020 





39159 


34871 


30561 


46642 


49540 


36843 


28934 


20805 


13 


1552 


2167 


el7550 





39145 


34397 


30646 


47276 


49524 


36508 


28623 


20622 


14 


1549 


2112 


el7700 





39118 


33950 


30836 


47659 


49540 


36168 


28308 


20460 


15 


1545 


2041 


el7850 


- — 


39112 


33557 


31180 


47959 


49616 


35829 


27987 


20298 


16 


1560 


1977 


17998 





39098 


33216 


31661 


48087 


49455 


35485 


27673 


20127 


17 


1587 


2663 


18251 





39145 


32814 


32232 


48329 


49142 


35155 


27355 


19961 


18 


1625 


3944 


18406 





39145 


32413 


32908 


48746 


48799 


34826 


27033 


19807 


19 


1554 


4646 


18471 





39145 


32089 


34723 


49058 


48412 


34486 


26729 


19668 


20 


1498 


5235 


18597 


--- 


39145 


31822 


35796 


49112 


48019 


34154 


26444 


19514 


21 


1501 


5857 


18773 





39145 


31574 


37286 


48997 


47554 


33823 


26142 


19376 


22 


1558 


6691 


18924 





39139 


31401 


38177 


48700 


47037 


33487 


25831 


19208 


23 


1582 


7133 


18975 





39139 


31315 


39703 


48602 


46509 


33159 


25521 


19056 


24 


1567 


7492 


19005 





39125 


31284 


40133 


48473 


45970 


32977 


25219 


18828 


25 


1460 


7810 


19040 





39118 


31266 


40318 


48389 


45427 


32927 


24911 


18672 


26 


1401 


8074 


19259 





39125 


31365 


40600 


48541 


44887 


32876 


24612 


18517 


27 


1439 


8332 


19452 





39159 


31513 


40903 


48913 


44300 


32826 


24319 


18331 


28 


2008 


8589 


19534 





39139 


31562 


40841 


49432 


43761 


32594 


24016 


18182 


29 


2054 


8802 


19899 








31494 


40545 


49816 


43197 


32257 


23716 


18013 


30 


2081 


8987 


21430 








31395 


40202 


49900 


42666 


31915 


23422 


17864 


31 


2110 





24195 








31204 





49739 





31574 


23119 





MAX 


2110 


8987 


24195 








39200 


40903 


49900 


49754 


42102 


31229 


22823 


MIN 


1401 


1977 


9260 








31204 


30359 


39478 


42666 


31574 


23119 


17864 


a 


17.73 


42.41 


75.50 




99.70 


87.40 


101.26 


114.39 


104.80 


88.00 


73.56 


63.49 


b 


t421 


+ 6877 


+15208 






-7935 


+ 8998 


+ 9537 


-7073 


-11092 


-8455 


-5255 


CAL YR 


1996 


MAX 49816 


MIN 1401 


b +4218 


















WTR YR 


1997 




MIN 1401 


b +16175 



















e Estimated. 

a Gage height, in feet, at end of month. 

b Change in contents, in acre-feet. 



248 



SACRAMENTO RIVER BASIN 
1 1414100 FORDYCE CREEK BELOW FORDYCE DAM, NEAR CISCO, CA 



LOCATION.-Lat 39°22'48", long 120°29'54". in NW 1/4 SE 1/4 sec.34, T.18 N., R.13 E., Nevada County, Hydrologic Unit 18020125, Tahoe 
National Forest, on right bank 850 ft downstream from Fordyce Dam, and 5.3 mi northeast of Cisco. 

DRAINAGE AREA.--31.7 mil 

PERIOD OF RECORD.--June 1966 to current year. 

GAGE.--Water-stage recorder. Elevation of gage is 6,250 ft above sea level, from topographic map. 

REM ARKS, --Flow regulated by Fordyce Lake (station 1 1414090). See schematic diagram of Yuba River basin. 

COOPERATION. -Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 4,660 ft^/s, July 9, 1974, gage height, 7.90 ft in gage well, 6 82 ft from high- 
waler marks, from rating curve extended above 1,000 ft''/s on basis of slope-area measurement of peak flow; minimum daily, 3.5 fr/s, Jan. 2-9, 
1979. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



OCT 



NOV 



APR 



AUG 



SEP 



1 


5.9 


5. 


S 


27 


78 


79 


37 


285 


501 


394 


300 


175 


152 


2 


5.6 


5. 


4 


27 


1330 


77 


37 


285 


499 


351 


317 


174 


152 


3 


5.5 


5. 


4 


27 


1700 


73 


37 


196 


500 


387 


328 


174 


151 


4 


5.2 


5. 


3 


29 


1030 


70 


148 


103 


502 


910 


326 


174 


151 


5 


5.1 


5. 


.4 


37 


691 


67 


315 


103 


342 


486 


325 


173 


150 


6 


4.9 


5. 


4 


30 


520 


63 


314 


103 


28 


240 


324 


93 


150 


7 


4.6 


20 




30 


328 


60 


311 


103 


29 


233 


254 


23 


150 


8 


4.5 


24 




31 


247 


59 


312 


103 


110 


232 


179 


23 


149 


9 


4.2 


21 




33 


204 


57 


310 


103 


324 


261 


178 


23 


149 


10 


4.2 


19 




34 


171 


55 


309 


103 


329 


271 


177 


23 


149 


11 


4.2 


16 




38 


150 


52 


308 


104 


333 


216 


177 


109 


149 


12 


4.2 


13 




41 


138 


50 


306 


103 


341 


178 


177 


163 


148 


13 


4.2 


22 




38 


135 


49 


305 


104 


431 


165 


176 


162 


148 


14 


4.2 


44 




36 


135 


48 


300 


104 


558 


156 


176 


162 


147 


15 


4.2 


53 




36 


134 


48 


298 


105 


594 


148 


175 


161 


148 


16 


4.7 


48 




36 


121 


48 


297 


103 


643 


243 


174 


161 


147 


17 


5.2 


56 




36 


93 


48 


296 


110 


631 


297 


174 


160 


146 


18 


5.1 


37 




36 


86 


49 


295 


111 


563 


295 


173 


159 


146 


19 


5.1 


21 




36 


81 


49 


295 


116 


539 


294 


172 


159 


147 


20 


5.2 


20 




36 


81 


43 


294 


115 


545 


293 


172 


159 


146 


21 


5.3 


22 




36 


82 


38 


293 


118 


538 


299 


172 


158 


145 


22 


5.3 


25 




36 


83 


37 


292 


117 


536 


313 


171 


158 


145 


23 


5.3 


25 




36 


98 


37 


292 


137 


534 


311 


170 


157 


145 


24 


5.5 


25 




36 


120 


37 


289 


238 


533 


310 


96 


157 


145 


25 


5.4 


25 




36 


130 


37 


287 


298 


397 


309 


25 


157 


145 


26 


5.2 


25 




38 


144 


37 


288 


357 


240 


308 


25 


155 


145 


27 


5.4 


25 




39 


126 


37 


288 


465 


180 


306 


25 


155 


144 


28 


5.4 


25 




37 


110 


37 


288 


513 


183 


305 


118 


155 


145 


29 


5.4 


26 




43 


99 





288 


507 


249 


303 


176 


154 


145 


30 


5.5 


26 




51 


89 





289 


502 


450 


301 


176 


153 


145 


31 


5.6 


-■ 


-- 


54 


82 





288 





560 





176 


153 





TOTAL 


155.3 


695 


.4 


1116 


8616 


1441 


8306 


5814 


12742 


9115 


5784 


4322 


4424 


MEAN 


5.01 


23 


.2 


36.0 


278 


51.5 


268 


194 


411 


304 


187 


139 


147 


MAX 


5.9 


56 


54 


1700 


79 


315 


513 


643 


910 


328 


175 


152 


MIN 


4.2 


5 


.3 


27 


78 


37 


37 


103 


28 


148 


25 


23 


144 


AC -FT 


308 


1380 


2210 


17090 


2860 


16470 


11530 


25270 


18080 


11470 


8570 


8780 



SACRAMENTO RIVER BASIN 
1 1414100 FORDYCE CREEK BELOW FORDYCE DAM, NEAR CISCO, CA— Continued 

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1966 - 1997, BY WATER YEAR (WY) 

OCT NOV DEC JAN FEB MAR APR MAY JUN Jt 



249 



SEP 



MEAN 


80.4 


38.2 


26.1 


37.1 


58.3 


73.6 


68.9 


191 


360 


289 


212 


142 


MAX 


428 


236 


173 


278 


328 


353 


315 


727 


957 


542 


403 


497 


(WY) 


1976 


1977 


1982 


1997 


1984 


1984 


1986 


1996 


1995 


1995 


1983 


1980 


HIN 


4.35 


3.90 


3.75 


4.76 


4.78 


5.07 


9.21 


17.0 


36.4 


21.7 


11.4 


4.84 


(WY) 


1978 


1979 


1979 


1981 


1977 


1977 


1977 


1977 


1976 


1981 


1987 


1977 



SUMMARY STATISTICS 

ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC -FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1966 - 1997 



74093.3 






62530.7 












202 






171 






132 
288 
49.3 




1982 
1981 


3750 


May 


17 


1700 


Jan 


3 


3750 


May 


17 1996 


4.2 


Oct 


9 


4.2 


Oct 


9 


3.5 


Jan 


2 1979 


4.2 


Oct 


9 


4.2 


Oct 


9 


3.5 


Jan 


2 1979 








2480 


Jan 


2 


4660 


Jul 


9 1974 








6.18 


Jan 


2 


7.90 


Jul 


9 1974 


147000 






124000 






95690 






521 






336 






410 






107 






145 






31 






5.8 






5.8 






6.7 







250 



SACRAMENTO RTVER BASIN 
1 1414140 LAKE SPAULDING NEAR EMIGRANT GAP, CA 



LOCATION.--Lat 39°19'35", long 120°38'32", in SE 1/4 NE 1/4 sec.20, T. 17 N, R. 12 E., Nevada County, Hydrologic Unit 1 8020125, near center 
of Spaulding Dam on South Yuba River and 2.5 mi northeast of Emigrant Gap. 

DRAINAGE AREA.-l 18 mi^. 

PERIOD OF RECORD.-October 1964 to current year. 

GAGE.--Water-stage recorder. Datum of gage is 4,809.6 ft above sea level (levels by Pacific Gas & Electric Co.). Pnor to July 1968, noniecording 
gage at same site and datum. 

REMARKS. --Lake is formed by three concrete-arch dams with spillway on the middle arch. Storage began in 1913. Capacity, 74,773 acre-ft 
between gage heights 0.6 ft, bottom of outlet, and 205.0 ft, top of radial gates. Released water flows through Spaulding Powerplants Nos. 1 
and 2 (stations 11414154 and 11414155). Flow through Powerplant No. 1 is transported out of Yuba River basin by Drum Canal to Bear River 
basin. See schematic diagrams of Yuba and Bear River basins. 

COOPERATION— Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. Contents not rounded to U.S. Geological Survey standards. 

EXTREMES FOR PERIOD OF RECORD.-Maximum contents, 75,100 acre-ft, July 13, 1967, gage height, 205.5 ft; minimum, 914 acre-ft, 
Feb. 28, 1976, gage height, 25.5 ft. 

EXTREMES FOR CURRENT YEAR.-Maximum contents, 74,822 acre-ft. May 13, gage height, 205.07 ft; minimum, 13,609 acre-ft, Sept. 18, 
gage height, 82.84 ft. 

Capacity table (gage height, in feet, and contents, in acre-feet) 
(Based on survey by Pacific Gas & Electric Co., dated Apr. 23, 1965) 
20 566 70 9,632 

25 874 100 19,541 

30 1,352 150 41,545 

40 2,742 200 71,329 

50 4,578 206 75,473 

RESERVOIR STORAGE (ACRE-FEET), WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 
DAILY OBSERVATION AT 2400 HOURS 



OCT 



NOV 



DEC 



JAN 



FEB 



MAR 



APR 



MAY 



JUH 



JUL 



AUG 



SEP 



1 


48308 


34089 


33995 


72780 


63573 


63102 


63899 


73628 


74599 


68638 


43233 


23170 


2 


48380 


34122 


33340 


68220 


63560 


63127 


63662 


73580 


74411 


66472 


42644 


22415 


3 


48580 


34141 


32544 


65911 


63407 


63108 


63624 


73621 


74106 


68339 


42054 


21802 


4 


47980 


33831 


32112 


65061 


63350 


63223 


63618 


73981 


74502 


68233 


41462 


21183 


5 


47362 


33368 


39232 


64353 


63274 


63388 


63643 


74071 


74543 


68087 


40839 


20539 


6 


46802 


32978 


39525 


63892 


63236 


63382 


63611 


74474 


74134 


67856 


40154 


19946 


7 


46212 


32572 


38900 


63522 


63216 


63471 


63579 


74696 


73856 


67021 


39257 


19336 


8 


45648 


32222 


38405 


63350 


63197 


63560 


64142 


74724 


73483 


65859 


38375 


18746 


9 


45054 


32264 


39196 


63318 


63172 


63637 


64026 


74571 


73338 


64693 


37492 


18104 


10 


44465 


32314 


41965 


63248 


63166 


63758 


63873 


74522 


73041 


63465 


36649 


17522 


11 


43884 


32062 


45783 


63242 


62937 


63847 


63771 


74467 


72484 


62475 


35844 


16970 


12 


43264 


31634 


54571 


63166 


62981 


63835 


63803 


74794 


71834 


61285 


35215 


16436 


13 


42696 


31245 


57349 


63026 


63032 


63777 


63962 


74822 


71221 


60103 


34633 


15920 


14 


42075 


30831 


57688 


62975 


63134 


63739 


64379 


74787 


70626 


58920 


34033 


15422 


15 


41473 


30710 


57306 


62981 


63223 


63892 


65171 


74787 


70014 


57736 


33410 


14908 


16 


40865 


30813 


56739 


62912 


63305 


64058 


65586 


74766 


69605 


56583 


32802 


14321 


17 


40240 


33103 


56097 


62880 


63426 


64072 


65950 


74780 


70075 


55411 


32190 


13733 


18 


39666 


36927 


55358 


62842 


63376 


63950 


66850 


74801 


69686 


54236 


31593 


13609 


19 


39080 


37818 


54548 


62842 


63337 


64058 


66949 


74780 


69706 


53044 


30993 


14429 


20 


38489 


38116 


53761 


62823 


63293 


64167 


66608 


74773 


69679 


51858 


30416 


15226 


21 


37888 


37808 


53061 


62816 


63242 


64270 


68206 


74731 


69619 


50942 


29835 


15759 


22 


37335 


39337 


52296 


62912 


63216 


64430 


68200 


74662 


69558 


50459 


29238 


15978 


23 


36781 


39443 


51514 


62931 


63191 


64597 


69505 


74808 


69438 


49819 


28642 


16200 


24 


36294 


39055 


50646 


62969 


63134 


64629 


71458 


74717 


69385 


49061 


28031 


16443 


25 


35950 


38410 


49729 


64340 


63026 


64546 


73331 


74696 


69298 


48208 


27442 


16674 


26 


35829 


37675 


49712 


64822 


63077 


64732 


73649 


74578 


69204 


47362 


26822 


16918 


27 


35767 


36829 


51382 


64110 


63166 


64719 


73580 


74363 


69091 


46507 


26234 


17124 


28 


35445 


35984 


51268 


63701 


63140 


64539 


73476 


74286 


68971 


45778 


25631 


17328 


29 


35105 


35133 


53259 


63630 





64334 


73863 


74300 


68837 


45038 


25023 


17568 


30 


34785 


34198 


59874 


63471 





64257 


73573 


74731 


68724 


44432 


24406 


17802 


31 


34325 





67849 


63426 





64116 





74662 


--- 


43825 


23789 


— - 


MAX 


48580 


39443 


67849 


72780 


63573 


64732 


73863 


74822 


74599 


68638 


43233 


23170 


MIN 


34325 


30710 


32112 


62816 


62937 


63102 


63579 


73580 


68724 


43825 


23789 


13609 


a 


135.42 


135.15 


194.80 


187.98 


187.53 


189.06 


203.27 


204.84 


196.12 


154.35 


111.15 


95.18 


b 


-13922 


-127 


+33651 


-4423 


-286 


+ 976 


+ 9457 


+ 1089 


-5938 


-24899 


-20036 


-5987 


c 


23850 


22160 


30290 


1290 





2960 


28310 


42350 


38050 


38180 


30930 


6970 


d 


3140 


2400 


8190 


9030 








7470 


10880 


9220 


8800 


8850 


6620 


CAL YR 


1996 


MAX 74787 


MIN 30710 


b +35960 c 393100 d 69570 












WTR YR 


1997 


MAX 74822 


MIN 13609 


b -30445 c 265300 d 74600 













a Gage height, in feet, at end of month. 

b Change in contents, in acre-feet. 

c Diversion, in acre-feet, to Spaulding No. 1 Powerplant, provided by Pacific Gas & Electric Co. 

d Diversion, in acre-feet, to Spaulding No. 2 Powerplant, provided by Pacific Gas & Electric Co. 



SACRAMENTO RIVER BASIN 
1 1414170 DRUM CANAL AT TUNNEL OUTLET, NEAR EMIGRANT GAP, CA 



251 



LOCATION.--Lat Sg'ig'OS", long 120°39'08", in SE 1/4 SW 1/4 sec,20, T.17 N., R.12 E., Nevada County, Hydrologic Unit 18020125, Tahoe 
National Forest, 100 ft downstream from tunnel outlet, 1 .0 mi downstream from Spaulding No. 1 Powerplant, and 1 .7 mi northeast of Emigrant 
Gap. 

PERIOD OF RECORD.-October 1964 to current year. Prior to October 1972, published as "Drum Canal at intake." 

GAGE.-Water-stage recorder. Elevation of gage is 4,880 ft above sea level, from topographic map. Prior to Oct. 1, 1968, in powerplant 0.7 mi 
upstream at different datum. 

REMARKS. --Canal diverts from Spaulding No. 1 Powerplant (station 1 1414154) at Lake Spaulding Dam. Most of the water from Drum Canal 
enters the Bear River via Drum No. 1 and 2 Powerplants (station 1 1414196) at Drum Afterbay. Some of the water is diverted out of Drum 
Forebay to Alta Powerplant (station 1 1421725). See schematic diagrams of Yuba and Bear River basins. 

COOPERATION.-Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD.-Maximum daily discharge, 860 ft'/s. May 17, 1986; no flow for several days in most years. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



NOV 



DEC 



JAN 



FEB 



MAR 



APR 



JUN 



JUL 



SEP 



1 




00 


357 


760 


328 


2.6 


14 


196 


819 


844 


588 


675 


651 


2 




00 


185 


794 


102 


2.5 


15 


207 


820 


843 


588 


672 


651 


3 


100 




188 


790 


88 


2.5 


15 


237 


823 


842 


614 


669 


650 


4 


509 




370 


768 


58 


2.5 


16 


262 


823 


844 


593 


666 


650 


5 


488 




419 


495 


5.0 


2.5 


29 


274 


831 


844 


593 


661 


652 


6 


487 




417 


713 


2.7 


2.5 


104 


313 


796 


841 


596 


667 


658 


7 


486 




415 


840 


2.5 


2.5 


190 


326 


666 


840 


641 


574 


655 


8 


484 




384 


836 


2.5 


2.5 


163 


276 


706 


840 


688 


669 


652 


9 


482 




181 


836 


2.5 


2.5 


121 


325 


835 


838 


696 


663 


650 


10 


490 




181 


730 


2.5 


2.5 


114 


323 


831 


837 


692 


655 


644 


11 


492 




331 


806 


2.5 


105 


92 


322 


830 


841 


585 


659 


647 


12 


490 




408 


719 


20 


86 


86 


322 


829 


844 


697 


665 


643 


13 


487 




406 


780 


37 


1.9 


86 


322 


829 


842 


694 


659 


633 


14 


485 




405 


819 


37 


2.0 


98 


323 


835 


842 


688 


655 


624 


15 


485 




370 


828 


37 


2.0 


48 


324 


844 


842 


683 


662 


640 


16 


494 




198 


839 


14 


2.0 


48 


330 


843 


719 


669 


658 


674 


17 


493 




201 


839 


2.2 


2.1 


48 


641 


843 


574 


659 


660 


688 


18 


490 




426 


838 


2.2 


2.1 


48 


744 


840 


574 


690 


661 


490 


19 


487 




603 


834 


2.2 


2.0 


33 


670 


840 


564 


683 


660 


4.3 


20 


484 




704 


839 


29 


2.0 


27 


665 


837 


575 


682 


661 


4.4 


21 


481 




721 


827 


42 


2.0 


14 


694 


838 


578 


682 


656 


4.5 


22 


480 




722 


802 


42 


2.0 


14 


695 


840 


579 


562 


655 


4.5 


23 


477 




724 


796 


22 


9.4 


14 


578 


841 


575 


678 


654 


4.5 


24 


475 




757 


814 


10 


37 


67 


698 


844 


572 


681 


660 


4.5 


25 


398 




780 


840 


24 


38 


108 


712 


844 


579 


683 


661 


4.5 


26 


209 




792 


825 


5.2 


31 


107 


748 


843 


583 


682 


656 


4.5 


27 


208 




794 


833 


2.9 


24 


165 


746 


841 


585 


683 


653 


4.5 


28 


370 




793 


832 


2.5 


13 


197 


757 


839 


585 


687 


656 


4.3 


29 


409 




790 


812 


2.5 





197 


776 


838 


586 


671 


651 


4.3 


30 


396 




790 


774 


2.4 





197 


802 


839 


586 


682 


656 


4.4 


31 


388 







746 


2.4 





197 





845 





680 


654 





TOTAL12704. 


00 


14812 


24604 


934.7 


388.6 


2672 


14608 


25572 


21438 


20390 


20483 


11605.2 


MEAN 


410 


494 


794 


30.2 


13.9 


86.2 


487 


825 


715 


658 


661 


387 


MAX 


509 


794 


840 


328 


105 


197 


802 


845 


844 


697 


675 


688 


MIN 




00 


181 


495 


2.2 


1.9 


14 


196 


666 


564 


562 


651 


4.3 


AC -FT 


25200 


29380 


48800 


1850 


771 


5300 


28970 


50720 


42520 


40440 


40630 


23020 


a 


25270 


29880 


47480 


710 








14550 


32250 


31670 


32130 


32440 


18760 


b 


1150 


930 


1070 


42 


851 


1070 


1460 


1550 


1250 


1580 


1720 


1850 



a Discharge, in acre-feet, to Drum No. 1 and 2 Powerplants, provided by Pacific Gas & Electric Co. 
b Discharge, in acre-feet, to Alta Powerplant, provided by Pacific Gas & Electric Co. 



252 



SACRAMENTO RIVER BASIN 
1 1414170 DRUM CANAL AT TUNNEL OUTLET, NEAR EMIGRANT GAP, CA— Continued 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1965 - 1997, BY WATER YEAR (WY) 
OCT NOV DEC JAN FEB MAR APR MAY 



JUN 



AUG 



SEP 



MEAN 


413 


428 


458 


447 


468 


508 


597 


636 


625 


607 


569 


367 


MAX 


817 


824 


835 


837 


833 


838 


839 


842 


844 


820 


804 


661 


(WY) 


1983 


1984 


1984 


1984 


1984 


1984 


1996 


1978 


1978 


1983 


1983 


1986 


MIN 


.000 


29.5 


31.1 


30.2 


.000 


22.6 


22.9 


5.77 


166 


178 


.000 


.000 


(WY) 


1966 


1987 


1977 


1997 


1991 


1988 


1988 


1976 


1977 


1977 


1965 


1965 



SUMMARY STATISTICS 

ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
ANNUAL RUNOFF (AC-FT) 
ANNUAL DISCHARGE (AC-FT) a 
ANNUAL DISCHARGE (AC-FT) b 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1965 - 1997 



239473. 


54 






170211.50 














654 








466 






511 
796 

101 






1984 
1977 


851 




Feb 


17 


845 


May 


31 


860 


May 


17 


1986 




00 


Sep 


25 


.00 


Oct 


1 


.00 


Jul 


31 


1965 




00 


Sep 


25 


2.0 


Feb 


13 


.00 


Jul 


31 


1965 


475000 








337600 






369900 








463700 








265100 














11460 








14510 














841 








837 






825 








774 








585 






564 








304 








3.7 






29 









a Discharge, in acre-feet, to Drum No. 1 and 2 Powerplants, provided by Pacific Gas & Electric Co. 
b Discharge, in acre-feet, to Alta Powerplant, provided by Pacific Gas & Electric Co. 



SACRAMENTO RIVER BASIN 
11414200 SOUTH YUBA CANAL NEAR EMIGRANT GAP. CA 



253 



LOCATION.--Lat 39°18'49". long I20''39'43", in SE 1/4 NE 1/4 sec.30, T.17 N., R. 12 E.. Nevada County, Hydrologic Unit 18020125, on left bank 

of concrete flume 400 ft downstream from Bowman Lake Road and 2.5 mi northeast of Emigrant Gap. 
PERIOD OF RECORD. --October 1964 to current year. 

GAGE. -Water-stage recorder and concrete control. Elevation of gage is 4,590 ft above sea level, from topographic map. 
REMARKS— Canal diverts from Spaulding No. 2 Powerplant (station 1 1414155) at Lake Spaulding Dam. Downstream from the gage, some flow 

is diverted to Bear River. The remainder of the water enters Deer Creek at Deer Creek Powerplant (station 1 1414205). See schematic diagrams 

of Yuba and Bear River basins. 
COOPERATION— Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection 

with a Federal Energy Regulatory Commission project. 
EXTREMES FOR PERIOD OF RECORD.-Maximum daily discharge, 165 ft^/s, Aug. 3, 1965; no flow at times in some years. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



NOV 



DEC 



JAN 



FEB 



MAR 



APR 



MAY 



JUN 



JUL 



1 


59 


40 


34 


71 




11 




20 




2.0 


137 


137 


140 


137 


138 


2 


58 


42 


37 


5 


4 


10 


20 




27 


137 


137 


140 


135 


137 


3 


57 


41 


37 


2 


7 


9.3 


20 




41 


137 


137 


140 


135 


136 


4 


57 


45 


36 


2 


4 


9 


2 


20 




63 


138 


137 


139 


137 


135 


5 


56 


46 


25 


2 


3 


8 


9 


18 




74 


137 


137 


139 


136 


135 


6 


56 


45 


87 


11 




8 


8 


17 




92 


130 


137 


139 


137 


135 


7 


56 


45 


143 


18 




8 


8 


29 




104 


130 


137 


139 


141 


134 


8 


56 


46 


142 


18 




8 


8 


30 




104 


134 


137 


139 


141 


133 


9 


55 


47 


141 


18 




8 


8 


30 




105 


138 


137 


138 


141 


132 


10 


56 


45 


137 


18 




8 


7 


30 




102 


138 


139 


137 


140 


131 


11 


56 


45 


136 


18 




13 


29 




102 


138 


139 


136 


139 


129 


12 


56 


43 


140 


18 




9.0 


28 




102 


138 


139 


140 


138 


129 


13 


56 


43 


145 


17 




8.1 


28 




102 


139 


137 


139 


138 


128 


14 


57 


43 


143 


17 




8.3 


27 




103 


138 


137 


140 


137 


128 


15 


57 


41 


150 


17 




8.6 


28 




103 


138 


137 


139 


136 


126 


16 


59 


39 


155 


17 




8.8 


31 




96 


139 


135 


139 


137 


123 


17 


57 


35 


155 


17 




10 


32 




95 


139 


137 


139 


138 


99 


18 


57 


33 


143 


17 




9 .1 


19 




99 


139 


137 


139 


138 


72 


19 


57 


34 


154 


17 




8.7 


2 


2 


98 


139 


137 


138 


137 


69 


20 


57 


33 


154 


23 




8.5 


2 


1 


97 


139 


138 


138 


137 


70 


21 


57 


36 


134 


30 




8.4 


2 





95 


139 


139 


138 


136 


71 


22 


51 


31 


155 


31 




8.2 


2 





113 


139 


137 


137 


137 


69 


23 


47 


34 


154 


31 




13 


2 





147 


140 


137 


140 


137 


69 


24 


47 


36 


153 


30 




21 


2 





150 


140 


137 


140 


138 


68 


25 


46 


36 


152 


30 




21 


2 





156 


140 


136 


140 


135 


69 


26 


45 


36 


155 


15 




20 


2 





151 


140 


137 


139 


133 


68 


27 


47 


35 


154 


10 




21 


2 





144 


138 


138 


138 


132 


70 


28 


47 


37 


149 


11 




21 


2 





145 


137 


139 


138 


136 


71 


29 


46 


37 


141 


11 







2 





140 


137 


140 


138 


140 


71 


30 


43 


37 


140 


10 







2 





137 


137 


140 


137 


140 


72 


31 


41 





146 


9 


9 





2 








137 





137 


139 





TOTAL 


1652 


1186 


3927 


563 


7 


318.0 


482 


3 


3089.0 


4266 


4125 


4299 


4258 


3117 


MEAN 


53.3 


39.5 


127 


18 


2 


11.4 


15 


6 


103 


138 


138 


139 


137 


104 


MAX 


59 


47 


155 


71 


21 


32 


156 


140 


140 


140 


141 


138 


MIN 


41 


31 


25 


2 


3 


8.1 


2 





2.0 


130 


135 


136 


132 


68 


AC -FT 


3280 


2350 


7790 


1120 


631 


957 


6130 


8460 


8180 


8530 


8450 


6180 


a 


2920 


2080 


2730 


93 












4660 


5620 


4640 


3740 


3610 


3440 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1965 - 1997, BY WATER YEAR (WY) 



MEAN 


79.6 


67.9 


71.3 


75.1 


78.3 


80.4 


74.7 


108 


110 


96.9 


93.3 


89.8 


MAX 


158 


157 


157 


155 


151 


147 


146 


156 


163 


160 


155 


152 


(WY) 


1966 


1966 


1966 


1984 


1984 


1980 


1967 


1980 


1965 


1965 


1965 


1965 


MIN 


35.9 


14.7 


33.4 


18.2 


11.4 


15.6 


11.3 


27.2 


46.9 


46.1 


41.7 


38.0 


(WY) 


1978 


1995 


1978 


1997 


1997 


1997 


1979 


1977 


1977 


1977 


1977 


1977 



SUMMARY STATISTICS 



FOR 1996 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1965 - 1997 



ANNUAL TOTAL 


34509.3 






31283.0 






ANNUAL MEAN 


94.3 






85.7 






HIGHEST ANNUAL MEAN 














LOWEST ANNUAL MEAN 














HIGHEST DAILY MEAN 


155 


Dec 


16 


156 


Apr 


25 


LOWEST DAILY MEAN 


2.8 


Apr 


3 


2.0 


Mar 


21 


ANNUAL SEVEN-DAY MINIMtM 


34 


Jan 


29 


2.0 


Mar 


21 


ANNUAL RUNOFF (AC -FT) 


68450 






62050 






ANNUAL DISCHARGE (AC-FT) a 


40760 






33520 






10 PERCENT EXCEEDS 


152 






140 






50 PERCENT EXCEEDS 


69 






99 






90 PERCENT EXCEEDS 


39 






9.7 







85 


5 






124 






1967 


47 


2 




1977 


165 




Aug 


3 1965 




00 


Apr 


5 1986 



61910 

142 
79 
39 



a Discharge, in acre-feet, to Deer Creek Powerplant, provided by Pacific Gas & Electric Co. 



254 SACRAMENTO RIVER BASIN 

1 1414210 SOUTH YUBA RIVER BELOW SPAULDING NO. 2 POWERPLANT, NEAR EMIGRANT GAP. CA 

LOCATION.-Lat 39°19'28", long 120''38'42". in NE 1/4 SE 1/4 sec.20, T.I7 N., R,12 E., Nevada County, Hydrologic Unit 18020125, on left bank 
200 ft downstream from Spaulding No. 2 Powerplant, 0.2 mi downstream from Spaulding Dam, and 2.3 mi northeast of Emigrant Gap. 

DRAINAGE AREA --1 18 mil 

PERIOD OF RECORD. -October 1985 to current year. Unpublished records for water years 1965-85 in files of the U.S. Geological Survey. 

GAGE.--Water-stage recorder and V-notch sharp-crested weir and steel-lipped rectangular weir. Elevation of gage is 4,670 ft above sea level, ft'om 
topographic map. Prior to June 1988, at same site and different datum. 

REMARKS— Flow regulated by Lake Spaulding (station 1 1414140) 0.2 mi upstream. Water is released at the intake to South Yuba Canal (station 
1 1414200) 100 ft upstream. See schematic diagrams of Yuba and Bear River basins. 

COOPERATION— Records were collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD -Maximum discharge, 194 ft^/s, Apr. 14, June 8. 1986. gage height, 3.37 ft, from rating curve extended 
above 45 ft-'/s, on basis of weu- formula; minimum daily, 0.09 ft'/s, Nov. 5-7, 1985. 

DISCHARGE, CUBIC FEET PER SECOND. WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



NOV 



DEC 



JAN 



FEB 



MAR 



APR 



MAY 



JUN 



JUL 



AUG 



SEP 



1 


5.3 


3.9 


2, 


.5 


26 


7.8 


6.5 


6 


.2 


40 




42 


3.0 


7.9 


9.2 


2 


6.6 


3.6 


2. 


.0 


24 


7.2 


6.6 


6, 


.1 


40 




42 


3.0 


7.9 


9.0 


3 


4.5 


3.6 


1, 


.9 


17 


6.9 


6.4 


6. 


.2 


40 




42 


4.0 


7.9 


8.8 


4 


4.0 


3.6 


2. 


.7 


8.8 


6.8 


6.3 


6. 


.2 


40 




42 


5.9 


7.9 


8.8 


S 


4.0 


3.6 


6. 


.4 


9.1 


6.7 


6.5 


6, 


,2 


40 




42 


5.9 


21 


8.8 


6 


4.0 


3.6 


11 




13 


6.5 


6.3 


6. 


2 


26 




42 


5.9 


23 


8.8 


7 


4.0 


3.6 


22 




15 


6.4 


6.2 


6. 


2 


23 




17 


5.9 


8.2 


8.8 


8 


4.0 


3.6 


22 




11 


6.5 


6.2 


97 




37 




3.0 


3.8 


6.8 


8.8 


9 


4.0 


3.6 


25 




6.1 


6.4 


6.2 


85 




40 




16 


2.1 


6.8 


8.8 


10 


4.0 


3.6 


33 




6.1 


6.3 


6.2 


141 




40 




41 


3.5 


6.8 


8.8 


11 


4.0 


3.6 


33 




6.1 


6.5 


6.2 


136 




39 




40 


5.6 


7.1 


8.8 


12 


4.0 


3.6 


31 




6.2 


6.5 


6.2 


136 




39 




24 


5.6 


7.6 


8.6 


13 


4.0 


3.6 


34 




7.6 


6.3 


6.2 


136 




39 




2.5 


5.6 


7.6 


8.3 


14 


4.0 


3.6 


32 




8.7 


6.4 


6.2 


138 




39 




2.5 


5.6 


7.6 


8.4 


15 


4.0 


3.6 


27 




8.7 


6.5 


6.2 


138 




39 




2.5 


5.7 


7.6 


8.8 


16 


4.0 


3.6 


23 




8.8 


6.5 


6.7 


112 




39 




2.4 


5.9 


7.6 


8.8 


17 


4.0 


5.9 


22 




8.2 


7.2 


7.3 


28 




39 




2.3 


6.3 


7.4 


9.2 


18 


4.0 


3.1 


21 




7.3 


6.8 


6.5 


26 




39 




2.3 


6.8 


7.2 


9.7 


19 


4.0 


2.8 


22 




6.5 


6.8 


6.5 


31 




39 




2.3 


6.8 


7.2 


9.7 


20 


4.0 


1.8 


21 




7.7 


6.8 


6.5 


31 




39 




2.3 


6.8 


7.2 


9.7 


21 


3.9 


2.5 


18 




9.4 


6.5 


6.5 


31 




39 




2.3 


6.8 


7.2 


9.7 


22 


3.9 


3.8 


20 




9.3 


6.5 


6.5 


29 




39 




2.3 


7.2 


7.2 


7.6 


23 


4.0 


2.1 


20 




9.2 


6.5 


6.4 


32 




39 




2.3 


7.6 


8.0 


6.5 


24 


4.1 


1.9 


19 




9.2 


6.2 


6.2 


32 




39 




2.3 


7.6 


9.0 


6.5 


25 


4.2 


1.8 


19 




7.4 


6.2 


6.2 


32 




39 




2.8 


7.6 


9.2 


6.5 


26 


3.8 


1.8 


24 




5.6 


6.2 


6.2 


35 




39 




3.9 


7,6 


9.2 


6.4 


27 


3.6 


1.8 


21 




2.1 


6.3 


6.2 


40 




21 




4.8 


7.6 


9.2 


6.2 


28 


3.6 


1.8 


25 




2.6 


6.5 


6.2 


40 




2. 


8 


3.5 


7.6 


9.2 


6.2 


29 


3.8 


1.8 


30 




2.0 





6.2 


40 




2. 


8 


3.0 


7.6 


9.2 


6.2 


30 


4.0 


1.8 


30 




5.0 





6.2 


40 




4. 


6 


3.0 


7.6 


9.2 


6.2 


31 


4.0 





37 




7.2 





6.2 


-- 


■- 


42 




— - 


7.7 


9.2 


--- 


TOTAL 


127.3 


92.6 


657. 


5 


280.9 


184.7 


196.9 


1629. 


3 


1063. 


2 


442.3 


186.2 


274.1 


246.6 


MEAN 


4.11 


3.09 


21. 


2 


9.06 


6.60 


6.35 


54. 


3 


34. 


3 


14.7 


6.01 


8.84 


8.22 


MAX 


6.6 


5.9 


37 


26 


7.8 


7.3 


141 


42 


42 


7.7 


23 


9.7 


MIN 


3.6 


1.8 


1. 


9 


2.0 


6.2 


6.2 


6. 


1 


2. 


8 


2.3 


2.1 


6.8 


6.2 


AC -FT 


252 


184 


1300 


557 


366 


391 


3230 


2110 


877 


369 


544 


489 



SACRAMENTO RIVER BASIN 255 

1 1414210 SOUTH YUBA RIVER BELOW SPAULDING NO. 2 POWERPLANT, NEAR EMIGRANT GAP, CA— Continued 



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1986 - 1997, BY WATER YEAR (WY) 

OCT NOV DEC JAN FEB MAR APR MAY JUN 



AUG 



MEAN 


4.04 


3.93 


4.68 


4.51 


11.4 


18.5 


26.1 


24.2 


23.3 


5.28 


4.59 


4.45 


MAX 


5.85 


6.23 


21.2 


17.7 


61.4 


111 


118 


85.8 


111 


20.7 


8.84 


8.22 


(WY) 


1993 


1995 


1997 


1995 


1986 


1986 


1986 


1986 


1986 


1995 


1997 


1997 


MIN 


1.50 


1.52 


1.72 


1.70 


2.13 


1.95 


2.05 


1.75 


1.71 


1.71 


1.55 


1.58 


(WY) 


1986 


1986 


1987 


1989 


1989 


1988 


1987 


1987 


1987 


1986 


1986 


1987 



SUMMARY STATISTICS 

ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC -FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



FOR 199 6 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 1986 - 1997 



5426.1 






5381.6 




14.8 






14.7 




38 


Apr 


11 


141 


Apr 10 


1.0 


Jan 


1 


1.8 


Nov 20 


1.6 


Jan 


1 


1.8 
171 
2.89 


Nov 24 
Apr 8 
Apr 8 


10760 






10670 




33 






39 




5.0 






6.8 




2.1 






3.0 





11 


.2 








41 


.3 






1986 


2 


.05 






1988 


166 




Jun 


14 


1986 




.09 


Nov 


5 


1985 




.64 


Nov 


4 


1985 


194 




Apr 


14 


1986 


3. 


37 


Apr 


14 


1986 


1120 










32 










4, 


.3 








1. 


.7 









256 



SACRAMENTO RIVER BASIN 
11414250 SOUTH YUBA RIVER AT LANGS CROSSING, NEAR EMIGRANT GAP, CA 



LOCATION,--Lat39''19'07",long 120°39'24", in SW 1/4 SW 1/4 sec.20. T17 N, R. 12 E, Nevada County, Hydrologic Unit 18020125, on right 
bank 50 ft downstream from road bridge, 0.8 mi downstream from Spaulding Nos. 1 and 2 Powerplants, and 1 6 mi northeast of Emigrant Gap. 

DRAINAGE AREA.--120 mi-. 

PERIOD OF RECORD.-December 1965 to current year. 

GAGE. --Water-stage recorder. Datum of gage is 4,432.44 ft above sea level (levels by Pacific Gas & Electric Co.). 

REMARKS— Row regulated by Lake Spaulding (station 1 1414140) 0.8 mi upstream. Lake Spaulding receives water from Canyon Creek via the 
Bowman-Spaulding Canal (station 1 1416100). Most of the water is diverted out of the Yuba River just downstream from Spaulding Dam via 
Drum Canal (station 1 1414170) and South Yuba Canal (station 1 1414200). See schematic diagrams of Yuba and Bear River basins. 

COOPERATION— Records were collected by Pacific Gas & Electric Co , under general supervision of the US. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. 

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, about 34,200 ft^/s, Jan. 1 , 1997, gage height, 23.60 ft, from rating curve extended 
above 8,800 ft^/s on basis of spillway rating at Spaulding Dam; minimum daily, 2.1 ft-'/s, on several days during July and September 1977. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



NOV 



DEC 



JAN 



FEB 



MAR 



APR 



MAY 



JUN 



JUL 



AUG 



SEP 



1 


7.3 


6.3 


el6 


625400 


6679 


6446 


6868 


6404 


6159 


65.5 


6.6 


7.8 


2 


9.2 


e6.2 


12 


e22100 


6707 


6452 


6754 


6727 


6138 


64.8 


6.7 


7.8 


3 


6.6 


e6.1 


10 


66370 


6746 


6453 


6507 


6581 


6236 


65.3 


6.7 


7.7 


4 


6.0 


e6.0 


13 


62520 


6945 


6480 


6455 


6894 


6918 


66.9 


6.6 


7.5 


5 


5.8 


e6.0 


101 


61700 


6887 


6873 


6447 


6669 


6422 


67.1 


17 


7.5 


6 


5.8 


e6.0 


49 


61150 


6568 


6911 


6439 


6317 


6149 


eS.2 


20 


7.5 


7 


5.7 


e6.0 


45 


6875 


6501 


6695 


6427 


6219 


620 


6l6 


7.2 


7.4 


8 


5.7 


e5.9 


41 


6762 


6492 


6710 


6400 


6172 


e8.2 


627 


5.9 


7.3 


9 


5.7 


e5.9 


61 


6685 


6474 


6750 


6339 


6574 


613 


627 


5.9 


7.3 


10 


5.7 


e5.9 


157 


6671 


6447 


6806 


6394 


6537 


663 


626 


5.9 


7.3 


11 


5.7 


e5.9 


145 


e674 


e449 


6859 


6409 


6416 


644 


623 


6.0 


7.3 


12 


5.7 


e5.9 


146 


6623 


6380 


6843 


6410 


6638 


628 


621 


6.4 


7.3 


13 


5.8 


e5.9 


101 


6530 


e419 


6816 


6422 


6654 


69.6 


619 


6.4 


7.4 


14 


5.7 


e5.9 


65 


6499 


6455 


6831 


6443 


6626 


66.3 


6l8 


6.4 


7.5 


15 


5.7 


e5.9 


49 


6480 


6495 


6862 


6358 


6690 


65.4 


69.5 


6.3 


7.7 


16 


5.7 


e5.9 


39 


6476 


6539 


6964 


6315 


6659 


65.6 


66.8 


6.2 


7.4 


17 


5.7 


e35 


36 


6491 


6595 


elOOO 


6563 


6589 


65.3 


66.1 


6.2 


7.8 


18 


6.1 


e43 


33 


6473 


6620 


6986 


6714 


6602 


65.1 


66.9 


6.1 


9.2 


19 


5.9 


el5 


33 


6476 


6601 


61040 


62140 


6433 


64.6 


66.9 


6.1 


9.5 


20 


5.9 


e20 


32 


6465 


6547 


61140 


61430 


6452 


65.1 


67.0 


6.7 


9.5 


21 


5.8 


el2 


30 


6476 


6499 


61170 


61300 


6253 


64.6 


66.9 


6.2 


9.7 


22 


5.8 


e45 


30 


6488 


6463 


61240 


61210 


6150 


64.6 


e7.4 


6.1 


12 


23 


5.8 


e21 


29 


6524 


6437 


61370 


61270 


6259 


64.7 


67.8 


6.9 


8.1 


24 


6.9 


el4 


29 


6738 


6417 


61510 


6541 


6191 


64.7 


67.7 


8.3 


6.5 


25 


6.4 


el2 


29 


61020 


6407 


61410 


6167 


6181 


64.8 


67.8 


8.4 


6.2 


26 


6.0 


e9.2 


84 


61500 


6399 


61350 


6119 


687 


66.1 


67.8 


8.3 


5.9 


27 


5.9 


e8.2 


122 


61220 


6409 


61600 


6173 


650 


66.3 


67.9 


8.3 


5.8 


28 


5.9 


e7.7 


89 


e887 


6456 


61420 


6481 


el2 


66.1 


67.0 


8.3 


11 


29 


7.1 


e7.1 


147 


6752 





61250 


6366 


67.2 


65.7 


66.8 


8.3 


15 


30 


7.4 


e6.8 


210 


6713 





61090 


6701 


643 


65.9 


66.6 


8.1 


9.6 


31 


6.7 





4940 


6678 





6982 





6555 


--- 


66.8 


7.8 


--- 


TOTAL 


191.1 


351.7 


6923 


76416 


15033 


30309 


18562 


12641.2 


2298.7 


338.5 


236.3 


245.5 


MEAN 


6.16 


11.7 


223 


2465 


537 


978 


619 


408 


76.6 


10.9 


7.62 


8.18 


MAX 


9.2 


45 


4940 


25400 


945 


1600 


2140 


894 


918 


27 


20 


15 


MIN 


5.7 


5.9 


10 


465 


380 


446 


119 


7.2 


4.6 


4.8 


5.9 


5.8 


AC -FT 


379 


698 


13730 


151600 


29820 


60120 


36820 


25070 


4560 


671 


469 


487 


e Estimated. 

























SACRAMENTO RIVER BASIN 



257 



1 1414250 SOUTH YUBA RIVER AT LANGS CROSSING, NEAR EMIGRANT GAP, CA— Continued 

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1966 - 1997, BY WATER YEAR (WY) 

OCT NOV DEC JAN FEB MAR APR MAY JUN JUL 



MEAN 


7.12 


44.4 


52.1 


129 


99.7 


95.2 


91.2 


331 


408 


68.1 


6.14 


6.38 


MAX 


18.8 


683 


685 


2465 


1626 


1304 


620 


1734 


2613 


822 


9.44 


10.3 


(WY) 


1972 


1984 


1982 


1997 


1986 


1986 


1982 


1996 


1983 


1983 


1971 


1986 


MIN 


2.68 


4.51 


5.44 


4.51 


5.58 


5.10 


3.41 


5.29 


3.05 


2.34 


2.43 


2.73 


(WY) 


1978 


1978 


1977 


1976 


1977 


1977 


1977 


1977 


1977 


1977 


1977 


1977 



SUMMARY STATISTICS 

ANNUAL TOTAL 
ANNUAL MEAN 
HIGHEST ANNUAL MEAN 
LOWEST ANNUAL MEAN 
HIGHEST DAILY MEAN 
LOWEST DAILY MEAN 
ANNUAL SEVEN-DAY MINIMUM 
INSTANTANEOUS PEAK FLOW 
INSTANTANEOUS PEAK STAGE 
ANNUAL RUNOFF (AC -FT) 
10 PERCENT EXCEEDS 
50 PERCENT EXCEEDS 
90 PERCENT EXCEEDS 



FOR 199 6 CALENDAR YEAR 



FOR 1997 WATER YEAR 



WATER YEARS 19 66 



1997 



79100.6 






163546.0 














216 






448 






115 
448 
4.35 






1997 
1977 


15900 


May 


16 


25400 


Jan 


1 


25400 


Jan 


1 


1997 


5.3 


Jul 


18 


4.6 


Jun 


19 


2.1 


Jul 


15 


1977 


5.4 


Jul 


22 


4.7 


Jun 


19 


2.1 


Sep 


22 


1977 








34200 


Jan 


1 


34200 


Jan 


1 


1997 








23.60 


Jan 


1 


23.60 


Jan 


1 


1997 


156900 






324400 






83010 








494 






887 






90 








17 






30 






7.5 








5.8 






5.9 






5.3 









258 SACRAMENTO RIVER BASIN 

1 1414360 LAKE CREEK BELOW CARR LAKE. NEAR GRANITEVILLE. CA 

LOCATION.-Ut 39''23'57", long 120°38'31", in SE 1/4 NE 1/4 sec.29. T.18 N.. R.12 E.. Nevada County, Hydrologic Unit 18020125. Tahoe 

National Forest, on right bank 65 ft downstream from Carr Lake, 2.0 mi upstream from Fall Creek, and 5 8 mi southeast of Graniteville. 
DRAINAGE AREA.--0.48 mi^ 

PERIOD OF RECORD-October 1995 to cuirent year. Unpublished records for water years 1965-95 available in files of the U.S. Geological 
Survey. 

GAGE.-Water-slage recorder and compound rectangular weir. Elevation of gage is 6,650 ft above sea level (levels by Pacific Gas & Electric Co). 
August 1965 to November 1975, nonrecording gage at site 65 ft upstream at different datum. November 1975 to July 1984, nonrecording gage 
at same site but different datum. July 1984 to September 1995, nonrecording gage at same site and datum. 

REMARKS. --Records not computed for winter months. Flow regulated by Carr Lake. See schematic diagram of Yuba River basin. 

COOPERATION. -Records were collected by Pacific Gas & Electric Co.. under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. 

DISCHARGE. CUBIC FEET PER SECOND. WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 



NOV 



AUG 



1 


2.3 


5.6 


2 


2.9 


5.2 


3 


2.9 


5.2 


4 


2.9 


5.2 


5 


3.0 


5.1 


6 


3.1 


5.0 


7 


4.5 


5.0 


8 


5.2 


5.0 


9 


4.6 


5.0 


10 


4.2 


5.0 


11 


3.9 


4.8 


12 


3.7 


4.8 


13 


3.4 


4.8 


14 


3.1 


4.8 


15 


2.6 


4.6 


16 


2.3 


4.5 


17 


3.6 


4.3 


18 


3.1 


4.3 


19 


2.4 


4.2 


20 


2.3 


4.1 


21 


2.4 


4.1 


22 


1.9 


4.1 


23 


.43 


3.9 


24 


.23 


3.8 


25 


.26 


3.6 


26 


.32 


3.1 


27 


.34 





28 


1.3 





29 


2.0 





30 


2.0 





31 


3.4 


--- 


TOTAL 


80.58 





MEAN 


2.60 





MAX 


5.2 





MIN 


.23 





AC -FT 


160 


--- 


e Estimated. 








2.0 


e.60 


e.74 


.78 





1.9 


e.60 


e.74 


1.1 





1.9 


e.60 


e.74 


1.1 





3.9 


e.67 


.75 


1.1 





3.4 


e.67 


.70 


.81 





2.2 


e.67 


.67 


.57 





1.5 


e.67 


.67 


.54 





1.5 


e.74 


.65 


.54 





1.5 


e.74 


.75 


1.9 





1.5 


e.82 


.69 


2.9 





1.5 


e.82 


.61 


2.9 





1.4 


e.82 


.80 


2.9 





1.9 


e.91 


.99 


2.7 





1.3 


e.99 


.99 


2.6 





1.2 


e.75 


1.0 


2.6 





1.1 


e.60 


1.1 


2.6 





.80 


e.54 


1.1 


2.7 


4.0 


.81 


e.48 


1.1 


2.8 


5.7 


.97 


e.54 


.80 


1.9 


4.2 


.97 


e.60 


.40 


.92 


3.1 


.71 


G.67 


.41 


.88 


2.5 


.42 


e.74 


.51 


.82 


3.5 


.44 


e.74 


.67 


.67 


4.6 


.44 


e.74 


.67 


.64 


3.9 


.39 


e.67 


.67 


.55 


3.0 


.33 


e.60 


.62 


.48 


2.5 


.32 


e.54 


.60 


.40 


2.2 


.29 


e.48 


.60 


.32 


2.1 


.24 


e.42 


.67 


.32 


2.1 


e.42 


e.56 


.74 


.32 


2.0 





e.74 


.51 


--- 





37.25 


20.73 


22.66 


41.36 





1.24 


.67 


.73 


1.38 





3.9 


.99 


1.1 


2.9 





.24 


.42 


.40 


.32 





74 


41 


45 


82 



SACRAMENTO RTVER BASIN 
11414400 FRENCH LAKE NEAR CISCO, CA 



259 



LOCATION.-Lat39°25'16", long 120°32'28", in SE 1/4 SW 1/4 sec,17, T.18 N, R.13 E, Nevada County, Hydrologic Unit 18020125, Tahoe 
National Forest, on right bank near French Lake Dam on Canyon Creek, 0.5 mi upstream from Weil Lake, and 8.2 mi north of Cisco. 

DRAINAGE AREA.--4.60 mi^. 

PERIOD OF RECORD.-October 1986 to current year. Unpublished records for water years 1966-86 available in the files of the U.S. Geological 
Survey. 

GAGE.-Staff gages, observed approximately weekly except during the winter months. Datum of gage is sea level (levels by Nevada Irrigation 
District). 

REMARKS. --Reservoir is formed on natural lake by rock-filled dam completed in 1859. Usable capacity, 13,940 acre-ft between elevations 
6,594.90 ft, invert of outlet gate, and 6,660.28 ft, crest of spillway. Figures given represent usable contents. Released water is used for 
hydroelectric power and irrigation downstream. See schematic diagram of Yuba River basin. 

COOPERATION— Records were collected by Nevada Irrigation District, under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. Contents not rounded to U.S. Geological Survey standards. 

Capacity table (elevation, in feet, and contents, in acre-feet) 
(Based on survey by Nevada Irrigation District in 1964) 
6,610 1,805 6,640 8,006 

6,620 3,636 6.650 10,701 

6,630 5,677 6,662 14,542 



DAY 



RESERVOIR STORAGE (ACRE-FEET), WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 
DAILY INSTANTANEOUS VALUES 

OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 



1 
2 
3 

4 
5 

6 

7 

8 

9 

10 



11182 



12586 



14156 



2938 



9834 



11 
12 
13 
14 
15 



16 
17 
18 
19 
20 



10516 



13998 



21 
22 
23 
24 
25 

26 

27 
28 
29 

30 
31 



9324 



6762 



13283 



MAX 

MIN 



260 SACRAMENTO RIVER BASIN 

1 I4I44I0 CANYON CREEK BELOW FRENCH LAKE, NEAR CISCO. CA 

LOCATION.--Ut 39°25'16", long 120''32'30". in SE 1/4 SW 1/4 sec. 17, T.18 N., R.13 E., Nevada County, Hydrologic Unit I8020I25, Tahoe 
National Forest, on left bank 10 ft downstream from outlet at French Lake Dam on Canyon Creek, 0.5 mi upstream fi'om Weil Lake, and 8.2 mi 

north of Cisco. 

DRAINAGE AREA. -4.60 mil 

PERIOD OF RECORD.-January 1989 to current year (low flow records only). Unpublished records for water years 1967-88 available in files of 
the U.S. Geological Survey. 

GAGE.-Water-stage recorder and V-notch sharp-crested weir. Elevation of gage is 6,590 ft above sea level, bom topographic map. Prior to January 
1989, nonrecording gages at three sites and datums. 

REMARKS. -No records computed above 3.2 ft'/s. Flow regulated by French Lake (station 1 1414400). Flow over the spillway bypasses this station. 
See schematic diagram of Yuba River basin. 

COOPERATION— Records were collected by Nevada Irrigation District, under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. 

DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 

DAILY MEAN VALUES 

DAY OCT NOV DEC JAN FEB MAR APR MAY JUN Jtn, AUG SEP 

3.2 



1 





e2.9 


2.7 


2.7 


2.9 


3.0 


3.0 


2 





e2.9 


2.6 


2.7 


2.8 


3.0 


3.0 


3 





e2.9 


2.7 


2.7 


2.7 


3.0 


3.2 


i 





e2.9 


2.7 


2.7 


2.8 


3.0 


3.2 


5 





e2.9 


2.7 


2.7 


2.9 


3.0 


3.2 


6 





e2.9 


2.7 


2.7 


3.0 


3.1 


3.1 


7 





e2.9 


2.7 


2.7 


3.0 


3.1 


3.2 


8 





e2.9 


2.7 


2.7 


3.0 


3.1 


3.2 


9 





e2.9 


2.7 


2.8 


3.0 


3.2 


3.2 


10 





e2.9 


2.6 


2.8 


3.0 


3.2 


3.2 


11 





e2.9 


2.7 


2.8 


3.0 


3.2 


3.2 


12 





e2.9 


2.7 


2.7 


3.1 


3.2 


3.2 


13 





e2.9 


2.7 


2.5 


3.1 


3.1 


3.2 


14 





2.9 


2.7 


2.5 


3.2 


3.2 





15 





2.8 


2.8 


2.7 


3.2 


3.2 





16 





2.7 


2.8 


2.7 


3.2 


3.1 





17 





2.8 


2.7 


2.7 


3.2 


3.2 





18 





2.9 


2.7 


2.7 


3.1 


3.2 





19 





2.9 


2.7 


2.8 


3.1 


3.2 





20 





2.9 


2.6 


2.7 


3.1 


3.2 


— 


21 





2.9 


2.4 


2.7 


3.0 


3.2 





22 





2.9 


2.5 


2.8 


3.1 


3.2 


3.2 


23 





2.8 


2.5 


2.8 


3.0 


3.2 


3.2 


24 





2.8 


2.6 


2.7 


3.0 





3.2 


25 





2.8 


2.6 


2.7 


3.1 








26 





2.8 


2.9 


2.8 


3.1 


_— 


— 


27 





2.8 


2.7 


2.8 


3.1 








28 





2.8 


2.7 


2.8 


3.0 








29 





2.7 


2.7 


2.8 





3.2 





30 





2.7 


2.7 


2.8 





3.2 


3.2 


31 


e2.9 





2.7 


2.8 


— 


3.1 


— 


TOTAL 





85.6 


82.9 


84.5 


84.8 








MEAN 





2.85 


2.67 


2.73 


3.03 








MAX 





2.9 


2.9 


2.8 


3.2 








MIN 





2.7 


2.4 


2.5 


2.7 








AC -FT 





170 


164 


168 


168 


— 


— - 


e Estimated. 















2.7 
2.8 



2.9 
2.4 



2.3 



SACRAMENTO RIVER BASIN 
1 1414440 FAUCHERIE LAKE NEAR CISCO, CA 



261 



LOCATION.-Lat 39°25'45", long 120°34'04", in SE 1/4 NE 1/4 sec. 13, T.18 N., R.12 E., Nevada County, Hydrologic Unit 18020125, Tahoe 
National Forest, near right bank end of Faucherie Dam on Canyon Creek, 8.5 mi north of Cisco. 

DRAINAGE /VREA.--8.97 mi^. 

PERIOD OF RECORD.-October 1986 to current year. Unpublished records for water years 1965-86 available in files of the U.S. Geological 
Survey. 

GAGE.--Staff gages, observed approximately weekly during the summer months. Datum of gage is sea level (levels by Nevada Irrigation District). 

REMARKS. --Reservoir is formed on natural lake by earth-filled dam initially constructed prior to 1880 and enlarged in 1964. Usable capacity, 
3,740 acre-ft between elevations 6,090.00 ft, invert of outlet gate, and 6,123.00 ft, crest of spillway. Dead storage, below elevation 6,090 ft, 
240 acre-ft. Figures given represent total contents. Released water is used for hydroelectric power and irrigation downstream. See schematic 
diagram of Yuba River basin. 

COOPERATION. -Records were collected by Nevada Irrigation District, under general supervision of the U.S. Geological Survey, in connection 
with a Federal Energy Regulatory Commission project. Contents not rounded to U.S. Geological Survey standards. 

Capacity table (elevation, in feet, and contents, in acre-feet) 
(Based on survey by Nevada Irrigation District in 1964) 
6,090 240 6,110 2,216 

6,095 628 6,115 2,854 

6,100 1,095 6,120 3,540 

6,105 1,629 6,125 4,280 



RESERVOIR STORAGE (ACRE-FEET), WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 
DAILY INSTANTANEOUS VALUES 

OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 



1 

2 
3 

4 

5 

6 

7 
8 
9 

10 


--- 


--- 


--- 


4025 


— 


2427 


— 


3274 


3068 


11 

12 
13 
14 
15 

16 
17 
18 
19 
20 

21 


3980 


— 


— 


— - 


— 


3992 


--- 


3308 


3988 


22 
23 
24 
25 


3980 


— 


— 


26 
27 
28 
29 
30 
31 


-- 


2987 


— 


3980 


— 


— 


MAX 











MIN 












3988 



3719 



4040 



3986 



4040 



3920 



4013 
4016 



3998 



3849 



3986 



3780 



4016 



262 



SACRAMENTO RIVER BASIN 
1 1414450 CANYON CREEK BELOW FAUCHERIE LAKE, NEAR CISCO, CA 



LOCATION.-Ut 39°25'46". long 120''34'06', in SE 1/4 NE 1/4 sec.l3, T.18 N., R.12 E., Nevada County. Hydrologic Unit 18020125, Tahoe 
National Forest, on left bank 80 ft downstream from Faucherie Dam on Canyon Creek. 8.5 mi north of Cisco. 

DRAINAGE AREA.-8 97 mil 

PERIOD OF RECORD. --January 1989 to current year (low flow records only). Unpublished records for water years 1965-88 available m files of 
the U.S. Geological Survey. 

GAGE— Water-stage recorder and V-notch sharp-crested weir. Elevation of gage is 6,080 ft above sea level, from topographic map. October 1964 
to July 1988. nonrecording gage at site 10 ft downstream at different datum. July 1988 to January 1989, nonrecording gage at same site and 
datum. 

REMARKS. -No records computed above 3.2 ft^/s. Flow regulated by Faucherie Lake (station 1 1414440). Flow over the spillway bypasses this 
station. See schematic diag